Changelog
*********


NEXT_NETADDR_VERSION
====================

Date: not released yet


Release: 1.3.0
==============

Date: 2024-05-28

Added:

* Add partial address expansion in "IPNetwork" via the
  "expand_partial" switch, this enables opting into pre-1.1.0 behavior

Fixed:

* Fix running the test suite on musl systems

* Fix "IPAddress" IPv6 parsing with "ZEROFILL" enabled

* Fix handling of the "NOHOST" flag in the "IPNetwork" copy
  constructor


Release: 1.2.1
==============

Date: 2024-02-17

Fixed:

* Fix bad version 1.2.0 upload to PyPI – now yanked. No changes to the
  package.


Release: 1.2.0
==============

Date: 2024-02-17

Added:

* Add CLI tool subcommand to display Network information.

Changed:

* Support running Interactive shell without IPython installed.

Fixed:

* Explicitly raise "TypeError" is a non-string value is passed to
  "valid_ipv4()" or "valid_ipv6()".


Release: 1.1.0
==============

Date: 2024-02-15

Added:

* Add the required Python version to the package metadata (GH #365).

* Add "expand_partial_ipv4_address()" to the public API.

Fixed:

* Fix "IPNetwork(...) in IPRange(...)" false negatives (GH #157).

* Fix a few "IPNetwork" slicing edge cases (GH #214).

* Fix support for partial IP addresses accidentally left in
  "IPNetwork" in 1.0.0.

  When I removed the "implicit_prefix" switch I missed the fact that
  there was some partial IPv4 address expansion triggered
  unconditionally.

  If you need the old behavior use "expand_partial_ipv4_address()".

  Related GH issue: #110.

* Fixed an incorrect license classifier in the package metadata.


Release: 1.0.0
==============

Date: 2024-02-10

Removed:

* Drop support for Python versions lower than 3.7.

* Remove the flag shorthands: "N", "P" and "Z". Use "NOHOST",
  "INET_PTON" and "ZEROFILL" instead.

* Remove abbreviated CIDR format support in "IPNetwork"
  ("implicit_prefix=True"), use "cidr_abbrev_to_verbose()" if you need
  this behavior.

* Remove the "IPAddress.is_private" method.

  There are more precise replacements for subset of the addresses that
  used to handled by "is_private":

  * "IPAddress.is_link_local()"

  * "IPAddress.is_ipv4_private_use()"

  * "IPAddress.is_ipv6_unique_local()"

  * "IPAddress.is_global()"

  The following address blocks used to be handled by "is_private" have
  no dedicated convenience methods and you'll have to handle them
  manually or request a method addition:

  * "100.64.0.0/10" – Shared Address Space

  * "192.0.0.0/24" – IETF Protocol Assignments (watch out – there are
    exceptions in there)

  * "198.18.0.0/15" – Benchmarking

  * "239.0.0.0"-"239.255.255.255" – "240.0.0.0/4" is Reserved,
    "239.0.0.0/8" – unclear

Changed:

* Stop accepting leading zeros when parsing IPv4 addresses in
  "INET_PTON" mode (it's been allowed on some platforms).

  If you need to allow and discard leading zeros use the "ZEROFILL"
  flag.

  This change will affect implicit conversions from "str" in all
  relevant contexts. If you need to control the IPv4 parsing mode
  construct "IPAddress" objects explicitly.

* Stop parsing IPv4 addresses permissively ("inet_aton()"-like) by
  default.

  "INET_PTON" is the default mode.

  If you need to be permissive and parse using "inet_aton()" semantics
  use the "INET_ATON" flag.

  This change will affect implicit conversions from "str" in all
  relevant contexts. If you need to control the IPv4 parsing mode
  construct "IPAddress" objects explicitly.

* Apply the two changes above to "valid_ipv4()" as well.

* Update the address databases to the 2024-02-10 versions.

Fixed:

* Return "False" instead of raising "AddrFormatError" when an empty
  string is passed to "valid_ipv4()" or "valid_ipv6()".

* Fix handling of "dialect" provided to "EUI" during copy-
  construction.


Release: 0.10.1
===============

Date: 2024-01-02

Fixed:

* Get rid of some warnings

Deprecated:

* Deprecate the flag shorthands: "N", "P" and "Z". Use "NOHOST",
  "INET_PTON" and "ZEROFILL" instead.

* Deprecate importing objects from "netaddr" subpackages. Only
  importing things from the top-level "netaddr" namespace is
  supported, everything else is considered private.

  This has already been the case but we can use a reminder.

* Deprecate permissive-by-default IPv4 parsing in "valid_ipv4()". The
  "inet_pton()" semantics (with leading zeros always disallowed) will
  become the default. Use "INET_ATON" and/or "ZEROFILL" flags if you
  need the legacy behavior.


Release: 0.10.0
===============

Date: 2023-12-31

Added:

* Add an "INET_ATON" flag to explicitly request "inet_aton()" IPv4
  parsing semantics from "IPAddress".

* Add an "IPAddress.is_ipv4_private_use()" convenience method.

* Add an "IPAddress.is_global()" convenience method to allow
  determining if an address is considered globally reachable.

* Add an "IPAddress.is_ipv6_unique_local()" convenience method.

Fixed:

* Improve Python 3.13 compatibility, thank you John Eckersberg.

Deprecated:

* Deprecate Python 3.7 support.

* Deprecate abbreviated CIDR format support in "IPNetwork"
  ("implicit_prefix=True").

* Deprecate accepting leading zeros when parsing IPv4 addresses in
  "INET_PTON" mode (it's been allowed on some platforms).

  If you need to allow and discard leading zeros use the "ZEROFILL"
  flag.

  This change will affect implicit conversions from "str" in all
  relevant contexts. If you need to control the IPv4 parsing mode
  construct "IPAddress" objects explicitly.

* Deprecate parsing IPv4 addresses permissively ("inet_aton()"-like)
  by default.

  "INET_PTON" will become the default mode.

  If you need to be permissive and parse using "inet_aton()" semantics
  use the "INET_ATON" flag.

  This change will affect implicit conversions from "str" in all
  relevant contexts. If you need to control the IPv4 parsing mode
  construct "IPAddress" objects explicitly.

* Deprecate the "IPAddress.is_private" method. Migration instructions
  in the documentation.

Other:

* Raise an exception if invalid flags are passed to "IPAddress",
  "IPNetwork" or "IPRange".

* Improve the documentation substantially.

* Update the DB files to the latest versions (2023-12-23).


Release: 0.9.0
==============

Date: 2023-09-18

Added:

* Add hash capabilities to OUI (#225, amitmi704)

Fixed:

* **Backwards incompatible:** Handle RFC 6164 IPv6 addresses (don't
  reserve first IP address in point-to-point subnets) ($267, Damien
  Claisse)

* **Technically backwards incompatible:** Fix for is_loopback
  behaviour – consider "IPNetwork('::1/128')" to be loopback (#222,
  #223, niels)

* Include tutorials in source distributions (#215, Louis Sautier)

* Fix a documentation typo (#242, Wouter)

* Fix print syntax in the documentation to be Python 3 compatible
  (#221, François Magimel)

* Fix the Sphinx syntax in the documentation (#220, François Magimel)

Other:

* Update the databases (#266, Jakub Stasiak)

* Deprecate Python 3.6 (#263, Jakub Stasiak)

* Eliminate unnecessary evals (#228, KOLANICH)


Release: 0.8.0
==============

Date: 3 Jul 2020


Changes since 0.7.20
--------------------

* Fixed weak reference support in classes with "__slots__"

* Added "__bytes__" to "IPAddress" for intuitive usage, thanks to
  Michael Belousov.

* Added "format()" function to EUI, thanks to Omer Anson.

* Added "IPNetwork.netmask" property setter, thanks to Naveen Nathan.

* Added support for IABs in the "40:D8:55" OUI, thanks to Brian
  Maissy.

* Drastically optimized "spanning_cidr()", thanks to Brian Maissy.

* Fixed ""x.x.x.x/x" in IPNetwork" tests, thanks to xpac1985.

* Added support for passing iterables of "IPRange" to "IPSet" and
  "cidr_merge()", based on a patch by Henry Stern.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 205: https://github.com/netaddr/netaddr/issues/205
   * N log N complexity instead of linear

FIXED Issue 171: https://github.com/netaddr/netaddr/issues/171
   * Efficiently creating a large IPSet from a list of IPRanges?

FIXED Issue 161: https://github.com/netaddr/netaddr/issues/161
   * Weak reference support


Miscellanea
-----------

* The next release (0.9.0) will contain a backwards incompatible
  change in IPNetwork's behaviour. It's connected to handling of RFC
  6164 IPv6 addresses (/127 and /128): IPNetwork.broadcast will return
  None for those and first addresses in the networks will no longer be
  excluded when iterating IPNetwork and IPNetwork.iter_hosts(). See
  https://github.com/netaddr/netaddr/pull/168 (or temporarily reverted
  commit 2984c0a40a70 in this repository) to see the actual patch.


Release: 0.7.20
===============

Date: 19 Jun 2020


Changes since 0.7.19
--------------------

* Fixed returning from an iterator on Python 3.7+, by Sergey Kozlov.

* Fixed Python 3.8 SyntaxWarning on using *is not* with a string
  literal, by Stefan Nordhausen.

* Fixed DeprecationWarnings by using raw strings for escape characters
  used in regexes, by Sean McGinnis.

* Improved IPGlob documentation, by obkmeta.

* Fixed exception creation in corner cases by explicitly passing error
  message params as tuples, by Matthias Urlichs.

* Stopped manually replacing shebang of an included script.

* Stopped using __file__ in all code that's expected to run in
  environments that don't support it (like PyOxidizer-produced
  binaries).

* Updated all databases included in the package.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 182: https://github.com/netaddr/netaddr/issues/182
   * test_ip_splitter_remove_prefix_larger_than_input_range fails with
     python 3.7

FIXED Issue 206: https://github.com/netaddr/netaddr/issues/206
   * ""is not" with a literal." SyntaxWarning

FIXED Issue 198: https://github.com/netaddr/netaddr/issues/198
   * oui databases are outdated

FIXED Issue 188: https://github.com/netaddr/netaddr/issues/188
   * Avoid use of __file__


Miscellanea
-----------

* Python 2 versions older than 2.7 and Python 3 versions older than
  3.5 should be considered unsupported. No incompatible code has been
  introduced to the best of our knowledge but there's no CI
  infrastructure in place to verify this and if there are any issues
  with those versions they won't be fixed.

* Consequently, Python 2.7 and 3.5 support should be considered
  deprecated as 2.7 has reached its end-of-life already and 3.5 will
  hit it soon.

* A CI setup has been introduced which allows us to test on a variety
  of Python versions on all Mac, Linux and Windows.


Release: 0.7.19
===============

Date: 11 Jan 2017


Changes since 0.7.18
--------------------

* added a new SubnetSplitter class for those looking to divide up
  subnets. Thanks alanwill and RyPeck and those on (Stack Overflow
  discussion).

* removed bundled pytest dependency code for "python setup.py test".

* setup.py now uses setuptools only (no more distutils) and
  setup_egg.py removed.

* cleaned up INSTALL docs so they accurately reflect current Python
  packaging.

* fixed broken parsing, generating and reading of IEEE index files
  when switching between Python 2.x and 3.x.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 133: https://github.com/drkjam/netaddr/issues/133
   * Splitting a single network into multiple prefixed networks

FIXED Issue 129: https://github.com/drkjam/netaddr/issues/129
   * fix IPAddress().netmask_bits to return 0 for 0.0.0.0 and [::]
     addresses

FIXED Issue 117: https://github.com/drkjam/netaddr/issues/117
   * (python setup.py test) failing with python3 >= 3.5

FIXED Issue 137: https://github.com/drkjam/netaddr/issues/137
   * API reference is broken on ReadTheDocs

FIXED Issue 143: https://github.com/drkjam/netaddr/issues/143
   * Please refresh the bundled IANA and IEEE databases


Miscellanea
-----------

* Goodbye to NYSE Euronext (good times), hello Intercontinental
  Exchange ...


Release: 0.7.18
===============

Date: 4 Sep 2015


Changes since 0.7.17
--------------------

* cidr_merge() algorithm is now O(n) and much faster. Thanks to Anand
  Buddhdev (aabdnn) and Stefan Nordhausen (snordhausen).

* nmap target specification now fully supported including IPv4 CIDR
  prefixes and IPv6 addresses.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 100: https://github.com/drkjam/netaddr/issues/100
   * nmap.py - CIDR targets

FIXED Issue 112: https://github.com/drkjam/netaddr/issues/112
   * Observation: netaddr slower under pypy


Release: 0.7.17
===============

Date: 31 Aug 2015


Changes since 0.7.16
--------------------

* Fixed a regression with valid_mac due to shadow import in the
  netaddr module.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 114: https://github.com/drkjam/netaddr/issues/114
   * netaddr.valid_mac('00-B0-D0-86-BB-F7')==False for 0.7.16 but True
     for 0.7.15


Release: 0.7.16
===============

Date: 30 Aug 2015


Changes since 0.7.15
--------------------

* IPv4 networks with /31 and /32 netmasks are now treated according to
     RFC 3021. Thanks to kalombos and braaen.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 109: https://github.com/drkjam/netaddr/issues/109
   * Identify registry of global IPv6 unicast allocations

FIXED Issue 108: https://github.com/drkjam/netaddr/issues/108
   * One part of docs unclear?

FIXED Issue 106: https://github.com/drkjam/netaddr/issues/106
   * Eui64 Updated (pull request for Issue 105)

FIXED Issue 105: https://github.com/drkjam/netaddr/issues/105
   * Support dialects for EUI-64 addresses

FIXED Issue 102: https://github.com/drkjam/netaddr/issues/102
   * 0.7.15 tarball is missing tests.

FIXED Issue 96: https://github.com/drkjam/netaddr/issues/96
   * Wrong hosts and broadcasts for /31 and /32 networks.


Release: 0.7.15
===============

Date: 29 Jun 2015


Changes since 0.7.14
--------------------

* Fix slowness in IPSet.__contains__. Thanks to novas0x2a for
  noticing.

* Normalize IPNetworks when they are added to an IPSet

* Converted test suite to py.test


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 98: https://github.com/drkjam/netaddr/issues/98
   * Convert test suite to py.test

FIXED Issue 94: https://github.com/drkjam/netaddr/issues/94
   * IPSet.__contains__ is about 40 times slower than the equivalent
     IPRange

FIXED Issue 95: https://github.com/drkjam/netaddr/issues/95
   * Inconsistent Address Handling in IPSet


Release: 0.7.14
===============

Date: 31st Mar 2015


Changes since 0.7.13
--------------------

* Fix weird build breakage in 0.7.13 (wrong Python path, incorrect OUI
  DB).

* EUI, OUI, and IAB objects can now be compared with strings. You can
  do
     my_mac = EUI("11:22:33:44:55:66") my_mac == "11:22:33:44:55:66"
     and Python will return True on the "==" operator.

* Implement the "!=" operator for OUI and IAB under Python2. It was
  already
     working under Python3.

* 64 bit EUIs could only be created from strings with "-" as a
  separator.
     Now, ":" and no separator are supported, which already worked for
     48 bit EUIs.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 80: https://github.com/drkjam/netaddr/pull/80
   * Compare L2 addresses with their representations

FIXED Issue 81: https://github.com/drkjam/netaddr/issues/81
   * OUI database tests fail in 0.7.13

FIXED Issue 84: https://github.com/drkjam/netaddr/issues/84
   * Incorrect python executable path in netaddr-0.7.13-py2.py3-none-
     any.whl

FIXED Issue 87: https://github.com/drkjam/netaddr/pull/87
   * Handle eui64 addresses with colon as a delimiter and without
     delimiter.


Release: 0.7.13
===============

Date: 31st Dec 2014


Changes since 0.7.12
--------------------

* IPAddress objects can now be added to/subtracted from each other


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 73: https://github.com/drkjam/netaddr/issues/73
   * Adding IP Addresses

FIXED Issue 74: https://github.com/drkjam/netaddr/issues/74
   * compute static global ipv6 addr from the net prefix and mac
     address

FIXED Issue 75: https://github.com/drkjam/netaddr/issues/75
   * add classifiers for python 3.3 and 3.4 support


Release: 0.7.12
===============

Date: 6th Jul 2014


Changes since 0.7.11
--------------------

* Added method IPSet.iter_ipranges().

* bool(IPSet()) works now for large IPSets, e.g.
  IPSet(['2405:8100::/32']).

* IPNetwork.iter_hosts now skips the subnet-router anycast address for
  IPv6.

* Removed function fbsocket.inet_aton because it is unused and
  unnecessary


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 69: https://github.com/drkjam/netaddr/issues/69
   * Add __nonzero__ method to IPSet

FIXED Pull Request 68: https://github.com/drkjam/netaddr/pull/68
   * Fixed a bug related to allowing ::0 during iter_hosts for v6

FIXED Issue 67: https://github.com/drkjam/netaddr/issues/67
   * Remove function fbsocket.inet_aton

FIXED Pull Request 66: https://github.com/drkjam/netaddr/pull/66
   * Added Function to create list of IPRange for non-contiguous IPSet


Release: 0.7.11
===============

Date: 19th Mar 2014


Changes since 0.7.10
--------------------

* Performance of IPSet increased dramatically, implemented by
     Stefan Nordhausen and Martijn van Oosterhout. As a side effect,
     IPSet(IPNetwork("10.0.0.0/8")) is now as fast as you'd expect.

* Various performance improvements all over the place.

* netaddr is now hosted on PyPI and can be installed via pip.

* Doing  "10.0.0.42" in IPNetwork("10.0.0.0/24")  works now.

* IPSet has two new methods: iscontiguous() and iprange(), thanks to
  Louis des Landes.

* Re-added the IPAddress.netmask_bits() method that was accidentally
  removed.

* Networks 128.0.0.0/16, 191.255.0.0/16, and 223.255.255.0/24 are not
  marked as
     reserved IPv4 addresses any more. Thanks to marnickv for pointing
     that out.

* Various bug fixes contributed by Wilfred Hughes, 2*yo and Adam
  Goodman.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 58: https://github.com/drkjam/netaddr/issues/58

   * foo.bar doesn't throw AddrFormatError

FIXED Issue 57: https://github.com/drkjam/netaddr/issues/57

   * netaddr packages not hosted on PyPI

FIXED Issue 56: https://github.com/drkjam/netaddr/issues/56

   * Fix comparison with large IPSet()

FIXED Issue 55: https://github.com/drkjam/netaddr/pull/55

   * Fix smallest_matching_cidr and all_matching_cidrs

FIXED Issue 53: https://github.com/drkjam/netaddr/issues/53

   * Exclude 128.0.0.0/16 and possibly others from reserved range set?

FIXED Issue 51: https://github.com/drkjam/netaddr/issues/51

   * Encoding errors in netaddr/eui/oui.txt

FIXED Issue 46: https://github.com/drkjam/netaddr/issues/46

   * len(IPSet()) fails on python3

FIXED Issue 43: https://github.com/drkjam/netaddr/issues/43

   * Method to check if IPSet is contiguous

FIXED Issue 38: https://github.com/drkjam/netaddr/issues/38

   * netmask_bits is missing from the IPAddress

FIXED Issue 37: https://github.com/drkjam/netaddr/issues/37

   * Test failures with Python 3.3


Release: 0.7.10
===============

Date: 6th Sep 2012


Changes since 0.7.9
-------------------

* A bunch of Python 3.x bug fixes. Thanks Arfrever.

* Extended nmap support to cover full target specification.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 36 - https://github.com/drkjam/netaddr/issues/36

* ResourceWarnings with Python >=3.2

FIXED Issue 35 - https://github.com/drkjam/netaddr/issues/35

* netaddr-0.7.9: Test failure with Python 3

FIXED Issue 34 - https://github.com/drkjam/netaddr/issues/34

* netaddr.ip.iana.SaxRecordParser.endElement() incompatible with
  Python 3.1

FIXED Issue 33 - https://github.com/drkjam/netaddr/issues/33

* netaddr script not installed with Python 3

FIXED Issue 23 - https://github.com/drkjam/netaddr/issues/23

* valid_nmap_range() does not validate nmap format case.

FIXED Issue 22 - https://github.com/drkjam/netaddr/issues/22

* all_matching_cidrs: documentation incorrect


Release: 0.7.9
==============

Date: 28th Aug 2012


Changes since 0.7.8
-------------------

* Re-release to fix build removing Sphinx dependency.


Release: 0.7.8
==============

Date: 28th Aug 2012


Changes since 0.7.7
-------------------

* New SAX parser for IANA data source files (contributed by Andrew
  Stromnov)

* Fixed pickling failures with EUI, OUI and IAB classes.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 31 - https://github.com/drkjam/netaddr/issues/31

   * Exclude '39.0.0.0/8' network from reserved set. Thanks Andrew
     Stromnov

FIXED Issue 28 - https://github.com/drkjam/netaddr/issues/28

   * Fix algorithm in ipv6_link_local to fully conform to rfc4291.
     Thanks Philipp Wollermann

FIXED Issue 25 - https://github.com/drkjam/netaddr/issues/25

   * install_requires is too aggressive? Thanks Adam Lindsay and
     commenters.

FIXED Issue 21 - https://github.com/drkjam/netaddr/issues/21

   * deepcopy for EUI fails. Thanks Ryan Nowakowski.


Release: 0.7.7
==============

Date: 30th May 2012


Changes since 0.7.6
-------------------

* Comprehensive documentation update! It's only taken 4 years to get
  around to using Sphinx and I can confirm it is **TOTALLY AWESOME!**

* Various bug fixes

* Refreshed IEEE OUI and IAB data


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 24 - https://github.com/drkjam/netaddr/issues/24

   * Fixed TypeError when comparing BaseIP instance with non-BaseIP
     objects. Thanks pvaret

FIXED Issue 17 - https://github.com/drkjam/netaddr/issues/17

   * For large ipv6 networks the .subnet() method fails. Thanks
     daveyss

FIXED Issue 20 - https://github.com/drkjam/netaddr/issues/20

   * Test failure with Python 3. Thanks Arfrever


Release: 0.7.6
==============

Date: 13th Sep 2011


Changes since 0.7.5
-------------------

* A bug fix point release

* Refreshed 3rd party data caches

* Tested against Python 3.2.x and PyPy 1.6.x

* Fixed unit tests under for Mac OSX


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 15 - https://github.com/drkjam/netaddr/issues/15

   * Incorrect and invalid glob produced when last octet is not *

FIXED Issue 13 - https://github.com/drkjam/netaddr/issues/13

   * Added support for IPython 0.11 API changes. Thanks juliantaylor

FIXED Issue 11 - https://github.com/drkjam/netaddr/issues/11

   * Calling valid_glob on cidr raises ValueError. Thanks radicand

FIXED Issue 7 - https://github.com/drkjam/netaddr/issues/7

   * Unpickling Bug in IPSet. Thanks LuizOz and labeneator

FIXED Issue 2 - https://github.com/drkjam/netaddr/issues/2

   * UnboundLocalError raised in IPNetwork constructor. Thanks keesbos


Miscellanea
-----------

* Has a famous soft drink company started making it own NICs?


Release: 0.7.5
==============

Date: 5th Oct 2010


Changes since 0.7.4
-------------------

* Python 3.x is now fully supported. The paint is still drying on this
  so please help with testing and raise bug tickets when you find any
  issues! New Issue Tracker - https://github.com/drkjam/netaddr/issues

* Moved code hosting to github. History ported thanks to svn2git. -
  (https://github.com/nirvdrum/svn2git)

* All netaddr objects now use approx. 65% less memory due to the use
  of __slots__ in classes throughout the codebase. Thanks to Stefan
  Nordhausen and his Python guru for this suggestion!

* Applied many optimisations and speedups throughout the codebase.

* Fixed the behaviour of the IPNetwork constructor so it now behaves
  in a much more sensible and expected way (i.e. no longer uses
  inet_aton semantics which is just plain odd for network addresses).

* One minor change to behaviour in this version is that the .value
  property on IPAddress and IPNetwork objects no longer support
  assignment using a string IP address. Only integer value assignments
  are now valid. The impact of this change should be minimal for the
  majority of users.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 49 - http://code.google.com/p/netaddr/issues/detail?id=49

   * Incorrect IP range recognition on IPs with leading zeros

FIXED Issue 50 - http://code.google.com/p/netaddr/issues/detail?id=50

   * CIDR block parsing

FIXED Issue 52 - http://code.google.com/p/netaddr/issues/detail?id=52

   * ipv6 cidr matches incorrectly match ipv4 [sic]

FIXED Issue 53 - http://code.google.com/p/netaddr/issues/detail?id=53

   * Error in online documentation

FIXED Issue 54 - http://code.google.com/p/netaddr/issues/detail?id=54

   * IP recognition failure

FIXED Issue 55 - http://code.google.com/p/netaddr/issues/detail?id=55

   * Support for Python 3.x

FIXED Issue 56 - http://code.google.com/p/netaddr/issues/detail?id=56

   * checking IPAddress in IPNetwork

FIXED Issue 57 - http://code.google.com/p/netaddr/issues/detail?id=57

   * netaddr objects can't pickle

FIXED Issue 58 - http://code.google.com/p/netaddr/issues/detail?id=58

   * IPSet operations should accept the same arguments as IPAddress

FIXED Issue 59 - http://code.google.com/p/netaddr/issues/detail?id=59

   * netaddr fails to load when imported by a PowerDNS coprocess


Miscellanea
-----------

* Welcome back to standards.ieee.org which seems to have been down for
  weeks!

* Goodbye Sun Microsystems + Merrill Lynch, hello Oracle + Bank of
  America ...


Release: 0.7.4
==============

Date: 2nd Dec 2009


Changes since 0.7.3
-------------------

* Applied speed patches by S. Nordhausen

* Fixed an inconsistency between EUI and IPAddress interfaces. Made
  EUI.packed and EUI.bin properties (previously methods) and added a
  words() property.


Release: 0.7.3
==============

Date: 14th Sep 2009


Changes since 0.7.2
-------------------

* Added __add__, __radd__, __sub__, __rsub__ operators to the
  IPAddress class.

* Added support for validation and iteration of simple nmap style IPv4
  ranges (raised in Issue 46).

* Removed some unused constants from fallback socket module.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 44 - http://code.google.com/p/netaddr/issues/detail?id=44

   * int/long type error

FIXED Issue 46 - http://code.google.com/p/netaddr/issues/detail?id=46

   * Question about IPv4 ranges

FIXED Issue 47 - http://code.google.com/p/netaddr/issues/detail?id=47

   * IPNetwork cannot be evaluated as a boolean when it has a large
     size


Release: 0.7.2
==============

Date: 20th Aug 2009


Changes since 0.7.1
-------------------

FIXED a boundary problem with the iter_iprange() generator function
   and all associated calls to it throughout the codebase, including
   unit test coverage and adjustments.

* Replaced regular expressions in cidr_merge() with pre-compiled
  equivalents for a small speed boost.

* Adjustments to README raised by John Eckersberg.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 43 - http://code.google.com/p/netaddr/issues/detail?id=43

   * IPNetwork('0.0.0.0/0') not usable in for loop


Release: 0.7.1
==============

Date: 14th Aug 2009


Changes since 0.7
-----------------

* Renamed the netaddr shell script from 'nash' to plain 'netaddr'.
  This is to avoid a potentially nasty clash with an important Linux
  tool with the same name.

  Thanks to John Eckersberg for spotting this one early!

* Updated IANA and IEEE data files with latest versions.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 42 - http://code.google.com/p/netaddr/issues/detail?id=42

   * Bug in cidr_merge() function when passed the CIDRs 0.0.0.0/0
     and/or ::/0


Release: 0.7
============

Date: 11th Aug 2009


Changes since 0.6.x
-------------------

Please Note - This release represents a major overhaul of netaddr. It
breaks backward compatibility with previous releases. See the API
documentation for full details of what is available.

Some highlights of what has changed :-

* Internal module hierarchy has been completely overhauled and
  redesigned. This fixes up a lot of inconsistencies and problems with
  interdependent imports. All public classes, objects, functions and
  constants are still published via the main netaddr module namespace
  as in previous releases.

* No more AT_* and ST_* 'constants'.

* The Addr base class is gone. This removes the link between EUI and
  IP functionality so the library is can now easily be split into
  distinct units without many interdependencies between layer 2 and
  layer 3 functionality.

* The use of custom descriptor classes has been completely
  discontinued.

* Strategy classes and singleton objects have been replaced with a
  group of strategy modules in their own netaddr.strategy namespace.
  Each IP or EUI address object now holds a reference to a module
  rather than a singleton object.

* Many operations that were previously static class methods are now
  presented as functions in the relevant modules. See the API
  documentation for details.

* The IP and CIDR classes have been replaced with two new classes
  called IPAddress and IPNetwork respectively. This name change is
  important as the IP part of netaddr has been completed redesigned.
  The notion of an individual IP address and an IP network or subnet
  has been made more obvious. IPAddress objects are now true scalars
  and do not evaluate in a list or tuple context. They also do not
  support any notion of a netmask or CIDR prefix; this is the primary
  function of an IPNetwork object.

* Arbitrary IP ranges and are still supported but a lot of their
  functionality has also been exposed via handy functions.

* IP globbing routines (previous known as Wildcards) have been moved
  into their own submodule.

* Added a new IPSet class which fully emulates mutable Python sets.
  This replaces a lot of half-baked experimental classes found in
  0.5.x and 0.6.x such as IPRangeSet and CIDRGroup. See documentation
  for details.

* All methods and properties that previously used or supported the
  'fmt' formatting property no longer do so. In all cases, objects are
  now returned to correctly support pass through calls without side
  effects. It is up to the user to extract data in the right format
  from the objects IPAddress objects returned as required.

* Unit tests have been completed re-written to support docstring style
  tests bundled into test suites. These are handy as they double up as
  documentation being combined with wiki syntax. Implemented code
  coverage checking using coverage 3.x.

* nash - a nascent shell like tool for the netaddr library (requires
  IPython).

* Support for RFC 1924 added ;-)


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 13 - http://code.google.com/p/netaddr/issues/detail?id=13

   * Searching for a match in a list of CIDR objects

FIXED Issue 26 - http://code.google.com/p/netaddr/issues/detail?id=26

   * Refactor out use of isinstance()

FIXED Issue 28 - http://code.google.com/p/netaddr/issues/detail?id=28

   * Add support for network block operations

FIXED Issue 34 - http://code.google.com/p/netaddr/issues/detail?id=34

   * Addition issue?


Release: 0.6.4
==============

Date: 11th Aug 2009


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 40 - http://code.google.com/p/netaddr/issues/detail?id=40

   * Building RPM with "python setup.py bdist_rpm" fails, multiple
     errors


Release: 0.6.3
==============

Date: 23rd Jun 2009


Changes since 0.6.2
-------------------

* Fixed line endings in a number of new files created under Windows.

* Tweaked the ordering of values in tuple passed into the hash()
  function in the __hash__ method of the IP and IPRange classes to
  make it the same as the values used for comparisons implemented in
  the __eq__ method (Python best practice).

* Added a number of unit tests to improve code coverage.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 33 - http://code.google.com/p/netaddr/issues/detail?id=33

   * CIDR subtraction is broken for out-of-range CIDR objects

FIXED Issue 35 - http://code.google.com/p/netaddr/issues/detail?id=35

   * install error (on Python interpreters where socket.has_ipv6 is
     False)

FIXED Issue 36 - http://code.google.com/p/netaddr/issues/detail?id=36

   * netaddr.CIDR fails to parse default route CIDR

FIXED Issue 37 - http://code.google.com/p/netaddr/issues/detail?id=37

   * Bug in bitwise AND operator for IP addresses

FIXED Issue 38 - http://code.google.com/p/netaddr/issues/detail?id=38

   * Feature request: Addr.__nonzero__

FIXED Issue 39 - http://code.google.com/p/netaddr/issues/detail?id=39

   * CIDR.abbrev_to_verbose() not applying implicit classful netmask
     rules consistently


Release: 0.6.2
==============

Date: 13th Apr 2009


Changes since 0.6.1
-------------------

* Refreshed IEEE and IANA data files with latest revisions from their
  respective URLs.

  * IANA IPv4 Address Space Registry (last updated 2009-03-11)

  * Internet Multicast Addresses (last updated 2009-03-17)

  * IEEE OUI and IAB files (last updated 2009-04-13)

* Added get_latest_files() functions to both the netaddr.eui and
  netaddr.ip modules to assist in automating release builds.


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 32 - http://code.google.com/p/netaddr/issues/detail?id=32

   * Addr.__ne__ returns wrong answer


Release: 0.6.1
==============

Date: 6th Apr 2009


Changes since 0.6
-----------------

* Added COPYRIGHT file with details and attribution for all 3rd party
  files bundled with netaddr.

* Minimum Python version required is now 2.4.x changed from 2.3.x.

  * Python 2.3 compatibility code in many sections of code have been
    removed.

  * the @property and @staticmethod decorators are now used throughout
    the code along with the reversed() and sorted() builtin iterators.

  * A specific version check has also been added that will raise
    RuntimeError exceptions if you run netaddr on a Python interpreter
    version < 2.4.x.

* Integer addresses passed to the IP() and EUI() constructors no
  longer require a mandatory second address type (AT_*) argument in
  most cases. This is now only really required to disambiguate between
  IPv4/IPv6 addresses with the same numerical value. The same
  behaviour applies to EUI-48/EUI-64 identifiers. A small speed boost
  is achieved if the 2nd address type argument is explicitly provided.

* IPv6 addresses returned by EUI.ipv6_link_local() now always have a
  subnet prefix of /64.

* Default sort order of aggregate classes (IPRange, CIDR and Wildcard)
  has been changed (again). They now sort initially by first address
  and then by network block size from largest to smallest which feels
  more natural.

* Fixed a bug in the CIDR.abbrev_to_verbose() static method where IPv4
  addresses with 4 octets (i.e. non-partial addresses) were being
  assigned subnet prefixes using abbreviated rules. All complete IPv4
  addresses should always get a /32 prefix where it is not explicitly
  provided.

* Abbreviated address expansion in the CIDR constructor is now
  optional and can be controlled by a new 'expand_abbrev' boolean
  argument.

* Added the new CIDR.summarize() static method which transforms lists
  of IP addresses and CIDRs into their most compact forms. Great for
  trimming down large ad hoc address lists!

* Added the previous() and next() methods to the CIDR classes which
  return the CIDR subnets either side of a given CIDR that are of the
  same size. For the CIDR 192.0.2.0/24, previous will return
  192.0.1.0/24 and next will return 192.0.3.0/24. Also accepts and
  optional step size (default is 1).

* Added the supernet() method to the CIDR class which returns a
  generator of all the subnets that contain the current CIDR found by
  decrementing the prefixlen value for each step until it reaches
  zero.

* Changed the way the fallback code works when the socket module is
  missing important constants and functions.

* Removed the uppercase options from the Strategy constructors and
  internals as this behaviour can be easily replicated using the
  word_fmt option instead and requires less code (word_fmt='%X').


Specific bug fixes addressed in this release
--------------------------------------------

FIXED Issue 23 - http://code.google.com/p/netaddr/issues/detail?id=23

   * Improve IPv6 IPv4 mapped/compatible address formatting

FIXED Issue 24 - http://code.google.com/p/netaddr/issues/detail?id=24

   * bug in CIDR.subnet() when using the fmt argument

FIXED Issue 29 - http://code.google.com/p/netaddr/issues/detail?id=29

   * CIDR.subnet method's count argument isn't working as documented

FIXED Issue 30 - http://code.google.com/p/netaddr/issues/detail?id=30

   * not compatible with Python 2.3

FIXED Issue 31 - http://code.google.com/p/netaddr/issues/detail?id=31

   * byte order in documentation confusing or wrong


Release: 0.6
============

Date: 20th Jan 2009


Changes since 0.5.x
-------------------

* Namespace changes

  3 new sub namespaces have been added :-

  * netaddr.eui

  Currently contains IEEE OUI and IAB classes and lookup code.

  * netaddr.ip

  Currently contains IANA IPv4, IPv6 and IPv4 multicast lookup code.

  * netaddr.core

  Currently contains only a couple of classes that are shared between
  code in netaddr.eui and netaddr.ip.

  Please Note: This change is part of a two stage internal
  restructuring of netaddr. In future releases, layer-2 MAC/EUI
  functionality will be separated from and layer-3 IP, CIDR and
  Wildcard functionality. All shared code will be moved to
  netaddr.core. When the migration is complete (expected in 0.7) the
  netaddr.address and netaddr.strategy namespaces will be removed.
  Please endeavour to access everything you need via the top-level
  netaddr namespace from this release onwards. See netaddr.__all__ for
  details of constants, objects, classes and functions intended for
  the public interface.

* Addition of IEEE and IANA informational lookups

  * the IP() and EUI() classes now have an additional info() method
    through which contextual information about your addresses can be
    accessed. This data is published by IANA and the IEEE respectively
    and sourced directly from text files bundled with netaddr that are
    available for download publicly online. Details are available in
    the docstring of the relevant parsing classes. Subsequent netaddr
    releases will endeavour to keep up-to-date with any updates to
    these files.

  * the EUI() class has been updated with the addition of the OUI()
    and IAB() classes. They provide object based access to returned
    via the EUI.info() method. Please see API docs included with
    netaddr for details.

  * added new NotRegisteredError exception that is raised when an EUI
    doesn't match any currently registration entries in the IEEE
    registry files.

* Addr() class removed from the public interface

  * This class is only ever meant to be used internally and its usage
    may soon be deprecated in favour converting it into an abstract
    base class in future releases.

* Deletion of AddrRange() class

  * replaced with the more specific IPRange() class. AddrRange()
    wasn't very useful in practice. Too much time has been spent
    explaining its theoretical merits over its actual practicality for
    every day use.

* Addition of new IPRange() class

  * the new base class for CIDR() and Wildcard().

  * a 'killer feature' of this new class are the new methods
    iprange(), cidrs() and wildcard() which allow you to use and
    switch between all 3 formats easily. IPRange('x', 'y').cidrs() is
    particularly useful returning all the intervening CIDRs between 2
    arbitrary IP addresses.

  * IPRange() is a great place to expose several new methods available
    to sub classes. They are issupernet(), issubnet(), adjacent() and
    overlaps().

  * previous method called data_flavour() has been renamed (again) to
    a more suitable format().

* IP() class updates

  * is_netmask() and is_hostmask() methods have been optimised and are
    now both approximately 4 times faster than previously!

  * added wildcard() and iprange() methods that return pre-initialised
    objects of those classes based on the current netmask / subnet
    prefix.

  * copy constructor methods ipv4() and ipv6() now preserve the value
    of the prefixlen property now also support IPv6 options for
    returning IPv4-mapped or IPv4-compatible IPv6 addresses.

  * added new methods is_loopback(), is_private(), is_link_local(),
    is_ipv4_mapped() and is_ipv4_compat() which are all self
    explanatory.

  * added a bin() method which provides an IP address in the same
    format as the standard Python bin() builtin type ('0bxxx') now
    available in Python 2.6.x and higher.

  * added a packed() method which provides an IP address in packed
    binary string format, suitable for passing directly to Python
    socket calls.

* nrange() generator function updates

  * by default this now returns IP() objects instead of Addr()
    objects.

* CIDR() class updates

  * the 'strict_bitmask' option in the CIDR class constructor has been
    had a name change and is now just 'strict' (less typing).

  * support for Cisco ACL-style (hostmask) prefixes. Also available to
    the IP() class. They are converted to their netmask equivalents
    before being applied to the base address.

  * added a new subnet() generator method that returns iterators to
    subnet CIDRs found within the current CIDR object's boundaries
    e.g. a /24 CIDR can provide address with subnet prefixes between a
    /25 and /32.

  * added a new span() method which takes a list of IP, IPRange, CIDR
    and/or Wildcards returning a single CIDR that 'spans' the lowest
    and highest boundary addresses. An important property of this
    class is that only a single CIDR is returned and that it
    (potentially) overlaps the start and end addresses. The most
    important aspect of this method is that it identifies the left-
    most set of bits that are common to all supplied addresses. It is
    the plumbing that makes a lot of other features function
    correctly.

  * although IPv6 doesn't support the concept of a broadcast address,
    after some pondering I've decide to add network() and broadcast()
    methods to the CIDR class. It is an interface quirk that users
    expect so it has been added for ease of use.

  * the methods network(), broadcast(), hostmask() and netmask() have
    been wrapped in property() builtin calls to make them appear as
    read-only properties.

* Many more MAC and IPv4 string address representation are now
  supported

  * Improvements to both EUI and IP classes. They now accept many more
    valid address formats than previously. Thanks for all the bugs
    tickets raised.

* "__repr__()" method behaviour change

  * Using "repr()" now assume that you have performed a "from netaddr
    import *" before you execute them. They no longer specify the
    originating namespace of objects which is a bit unnecessary and a
    lot to read on-screen.They will also be moving around within the
    namespace shortly anyway so its best not to think of them as being
    anywhere other than directly below netaddr itself.

* 'klass' property renamed to 'fmt' (format)

  * now referred to as the 'format callable' property. An
    unfortunately but necessary change. 'klass' was a bad initial name
    choice as it most often doesn't even reference a class object also
    supporting references to Python types, builtin functions and user
    defined callables.

* Complete re-work and consolidation of unit tests.

  * now over 100 tests covering all aspects of the API and library
    functionality.

  * Moved all tests into a single file. Lots of additional tests have
    been added along with interface checks to ensure netaddr's always
    presents a predictable set of properties and methods across
    releases.

* Nascent support for Python eggs and setuptools.

  * Help is need to test this as it is not something I use personally.


Specific bug fixes addressed in this release
--------------------------------------------

* Finally fixed the IPv6 string address compression algorithm so that
  it is now compliant with the socket modules inet_ntop() and
  inet_pton() calls. (not available on all platforms).


Experimental Features
---------------------

* added bitwise operators to the IP class

  * does what it says on the tin. Does not effect that value of the IP
    object itself but rather, returns a new IP after the operation has
    been applied.

* IPRangeSet() class added (EXPERIMENTAL).

  * the intention with this class is to allows you to create
    collections of unique IP(), IPRange(), CIDR() and Wildcard()
    objects. It provides iteration over IPs in the collection as well
    as several membership based operations such as any_match()
    all_matches(), min_match() and max_match().

  * lots more work to do here. Please raise bugs and feature requests
    against this as you find them. Improvements to this are coming in
    0.7.


Release: 0.5.2
==============

Date: 29th Sep 2008


Specific bug fixes addressed in this release
--------------------------------------------

* Fixed Issue 15 in bug tracker. Bad validation and conversion of IPv4
  mapped IPv6 address values in IPv6Strategy class. Covered with unit
  test cases.

* Updated PrefixLenDescriptor() class so that modifications to the
  property CIDR.prefixlen also update CIDR.first and CIDR.last keeping
  them in sync. Covered by unit test cases.

* IP.hostname() method returns None when DNS lookup fails.


Release: 0.5.1
==============

Date: 23rd Sep 2008


Specific bug fixes addressed in this release
--------------------------------------------

* CIDR constructor was throwing a TypeError for valid unicode string
  addresses which worked in previous releases. Fixed and covered with
  a unit test case.

* The methods CIDR.netmask() and CIDR.hostmask() contained code errors
  that were causing them to fail. Problem fixed and covered with unit
  test case.


Release: 0.5
============

Date: 19th Sep 2008


Changes since 0.4.x
-------------------

**General**

* Access to all important object attributes in all netaddr classes now
  takes place via custom Python descriptor protocol classes. This has
  greatly simplified internal class logic and made external attributes
  changes much safer and less error prone. It has also made aggregate
  classes such as CIDR and Wildcard effectively read-write rather than
  read-only which they have been up until this release.

* Amended the way sort order is calculated for Addr and AddrRange
  (sub)class instances so that the address type is taken into account
  as well as as the numerical value of the address or address range.
  The ascending sort order is IPv4, IPv6, EUI-48 and EUI-64. Sequences
  of AddrRange (sub)class instances now sort correctly!

* Comparisons between instances of Addr and AddrRange (sub)classes now
  return False, rather than raising an AttributeError.

* Added checks and workaround code for Python runtime environments
  that suffer from the infamous socket module
  inet_aton('255.255.255.255') bug. This was discovered recently in
  Python 2.4.x on PowerPC under MacOS X. The fix also applies in cases
  where the socket module is not available (e.g. on Google App
  Engine).

* All general Exception raising in the strategy module has now been
  replaced with more specific exceptions, mainly ValueError (these
  were unintentionally missed out of the 0.4 release).

* Implemented __hash__() operations for the Addr and AddrStrategy
  classes. This allows you to use IP, CIDR and Wildcard objects as
  keys in dictionaries and as elements in sets. Please note - this is
  currently an experimental feature which may change in future
  releases.

* Added __ne__() operation to Addr and AddrRange classes.

* Obeying the 'Law of Demeter', the address type of Addr and AddrRange
  (sub)class instances can be accessed using the property directly :-

     obj.addr_type  # 0.5 onwards

  rather than having to go via the strategy object :-

     obj.strategy.addr_type  # 0.4 and earlier

* Renamed the AT_DESCR lookup dictionary to AT_NAMES. Removed invalid
  and duplicated imports from all modules.

**Addr class changes**

* Removed the setvalue() method from the Addr class and replaced all
  uses of __setattr__() replaced by custom descriptors throughout.

**IP class changes**

* Removed the ambiguity with masklen and prefixlen attributes in the
  IP class. prefixlen now denotes the number of bits that define the
  netmask for an IP address. The new method netmask_bits() returns the
  number of non-zero bits in an IP object if the is_netmask() method
  returns True. A prefixlen value other than /32 for an address where
  is_netmask() returns True is invalid and will raise a ValueError
  exception.

* Removed the family() method from the IP class. It duplicates
  information now provided by the prefixlen property.

* IP class has several new methods. is_multicast() and is_unicast()
  quickly tell you what category of IP address you have and while
  ipv4() and ipv6() act as IPv4 <-> IPv6 conversions or copy
  constructors depending on context.

* Reverse DNS lookup entries now contain a trailing, top-level period
  (.) character appended to them.

* Added the hostname() method to IP instances which performs a reverse
  DNS

* The IP class __str__() method now omits the subnet prefix is now
  implicit for IPv4 addresses that are /32 and IPv6 addresses that are
  /128. Subnet prefix is maintained in return value for all other
  values.

**AddrRange class changes**

* The AddrRange class no longer stores instances of Addr (sub)classes
  for the first and last address in the range. The instance variables
  self.start_addr and self.stop_addr have been renamed to self.first
  and self.last and the methods obj.first() and obj.last() have been
  removed.

  Instead, self.first and self.last contain integer values and a
  reference to a strategy object is stored. Doing this is a lot more
  useful and cleaner for implementing internal logic.

  To get Addr (sub)class objects (or strings, hex etc when
  manipulating the the klass property) use the index values obj[0] and
  obj[-1] as a substitute for obj.first() and obj.last() respectively.

* AddrRange (sub)class instances now define the increment, __iadd__(),
  and decrement, __isub__(), operators. This allows you to 'slide'
  CIDRs and Wildcards upwards and downwards based on their block
  sizes.

* The _retval() method has now been renamed data_flavour() - yes, the
  UK spelling ;-) You shouldn't really care much about this as it
  mostly for internal use. I gave it a decent name as I didn't see any
  real need to hide the functionality if users wanted it.

**CIDR class changes**

* The strictness of the CIDR class constructor in relation to non-zero
  bits once the prefix bitmask has been applied can be disabled use
  the optional argument strict_bitmask=False. It is True (strictness
  enabled) by default.

* Fixed a bug in abbreviated CIDR conversion. Subnet prefix for
  multicast address 224.0.0.0 is now /4 instead of /8.

* The CIDR class now supports subtraction between two CIDR objects,
  returning a list of the remainder. Please note that the bigger of
  the two CIDR objects must be on the left hand side of the the
  expression, otherwise an empty list is return. Sorry, you are not
  allowed to create negative CIDRs ;-)

* The function abbrev_to_cidr() has been renamed to and turned into
  the static method CIDR.abbrev_to_verbose(). No major changes to the
  logic have been made.

**Wildcard class changes**

* The Wildcard class now defines a static method Wildcard.is_valid()
  that allows you to perform validity tests on wildcard strings
  without fully instantiation a Wildcard object.


Release: 0.4
============

Date: 7th Aug 2008


Changes since 0.3.x
-------------------

* All general Exception raising has been replaced with more specific
  exceptions such as TypeError and ValueError and with the addition of
  two custom exception classes, AddrFormatError and
  AddrConversionError.

* The IP class now accepts a subnet prefix. It is *NOT* strict about
  non-zero bits to the right of implied subnet mask, unlike the CIDR
  class (see below).

* The CIDR class is now completely strict about non-zero bits to the
  right of the implied subnet netmask and raises a ValueError if they
  exist, with a handy hint as to the correct CIDR to be used based on
  the supplied subnet prefix.

* The CIDR class now also supports abbreviated CIDR ranges and uses
  older classful network address rules to decided on a subnet prefix
  if one is not explicitly provided. Supported forms now include 10,
  10/8 and 192.168/16. Currently only supports these options for IPv4
  CIDR address ranges.

* __repr__() methods have been defined for all classes in the netaddr
  module producing executable Python statements that can be used to
  re-create the state of any object.

* CIDR and Wildcard classes now have methods that support conversions
  between these two aggregate types :-

     * CIDR -> Wildcard

     * Wildcard -> CIDR


Housekeeping Changes
--------------------

* Massive docstring review and tidy up with the inclusino of epydoc
  specific syntax to spruce up auto-generated API documentation.

* Thorough review of code using pylint.

* Netaddr module now has the special __version__ variable defined
  which is also referenced by setup.py.

* Some minor changes to setup.py and MANIFEST.in.

* Constants and custom Exception classes have been moved to
  __init__.py from strategy.py

* An import * friendly __all__ has been defined for the netaddr
  namespace which should remove the need to delve too much into the
  address and strategy submodules.

* Fixed a number of line-ending issues in several files.
