True link equalizer (teql0 device) causes python-netifaces to misbehave

The usual workflow for netifaces modules, when you get the list of interfaces via netifaces.interfaces() and then, for every interface, get the details via netifaces.ifaddresses(), fails when you have a teql0 device in the system:

Python 2.7.1+ (r271:86832, Feb 24 2011, 15:11:59)
[GCC 4.5.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import netifaces
>>> netifaces.interfaces()
['lo', 'eth0', 'dummy0', 'teql0', 'tunl0', 'gre0', 'sit0', 'ip6tnl0']
>>> netifaces.ifaddresses("teql0")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: You must specify a valid interface name.

The issue was mentioned by the author once ( http://alastairs-place.net/2007/03/netifaces ), but either he did not fix it upstream, or it was not propagated to Ubuntu; in any event, this is still present in natty's python-netifaces=0.5-2.1build1.

The fix for the issue was proposed at the author's page as well ("Well in a way, the problem is that the line ”found = TRUE;” should be above the test for a no-address entry. That way you'd get an empty dictionary rather than a ValueError."), would be great to either persuade author to fix it, or to fix it ourselves and propagate to Debian.