[Bug network/12398] AI_ADDRCONFIG breaks getaddrinfo() calls for loopback names and addresses

["psimerda at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=12398

--- Comment #5 from Pavel Åimerda <psimerda at redhat dot com> 2012-11-20 23:32:57 UTC ---
Changed the comment. Currently, I'm using the following patch to fix my
node-local IPv4/IPv6 networking (link-local networking is currently not
broken in Fedora since they removed the patch to also disregard link-local
addresses). I'm proposing this patch as a temporary solution until this
s fixed properly with the following notes:

* It breaks POSIX1-2008 (which requires checking for any IPv4/IPv6 address)
* It breaks informational RFC 3493 (which requires the same but disregards the
loopback interface)
* It ignores the older informational RFC 2553 (which requires the same as RFC
3494 but only for DNS lookups)

The POSIX1-2008, RFC 3493 and obsolete RFC 2553 are all effectively useless
but the obsolete one is closest to the truth. Whether a global IPv4 address,
a global IPv4 route, or a global IPv4 default gateway is the right sign of
global connectivity, is up to discussion.

I also changed the description of the bug to reflect the actual problem,
not one possible (maybe wrong, but at least POSIX-compliant) solution of that
problem.

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