[Python-modules-team] Bug#460234: check_addr_prefixlen exposes bug in net()/broadcast()/overlaps() methods

martin f krafft madduck at debian.org
Fri Jan 11 12:59:55 UTC 2008

retitle 460234 check_addr_prefixlen exposes bug in net() method

I didn't see http://pypi.python.org/pypi/IPy/0.55 but was looking at
old documentation. IPy has a global option,
IPy.check_addr_prefixlen, which, if False, allows for "uncommon"
prefixes. Now, IP('') seems to work.

However, now the net() and broadcast() methods return garbage:

In [50]: IP('').net()
Out[50]: IP('')

In [51]: IP('').broadcast()
Out[51]: IP('')

When in fact the addresses should be and

This works, but prevents me from saving the prefix length with the IP.

In [63]: IP('').make_net(22)
Out[63]: IP('')


IP('').overlaps('') == 0

which is wrong.

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.23-1-amd64 (SMP w/1 CPU core)
Locale: LANG=en_GB, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages python-ipy depends on:
ii  python                        2.4.4-6    An interactive high-level object-o
ii  python-support                0.7.6      automated rebuilding support for p

python-ipy recommends no packages.

-- no debconf information

 .''`.   martin f. krafft <madduck at debian.org>
: :'  :  proud Debian developer, author, administrator, and user
`. `'`   http://people.debian.org/~madduck - http://debiansystem.info
  `-  Debian - when you have better things to do than fixing systems
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