Although I have not investigated the network traces in this bug in any
detail, people investigating it (particularly JoeKlein, who touches on
similar issues) may like to bear in mind that we used to have a problem
along these lines in Ubuntu, but adjusted glibc's resolver code in order
to avoid it. As a result you may find that old documentation or
documentation based on other systems is not as applicable as you might
think at first glance. The original change was:
glibc (2.5-0ubuntu13) feisty; urgency=low
* debian/patches/any/local-ipv6-sanity.diff: Only do AAAA lookups if we
have an interface with better than link-local addresses available.
-- Tollef Fog Heen <tfh...@ubuntu.com> Tue, 3 Apr 2007 14:11:26 +0200
In the current glibc source package, you'll find that change in
debian/patches/any/local-ipv6-lookup.diff.
On general troubleshooting principles, if you are encountering a problem
with AAAA lookups happening when true IPv6 connectivity is not available
(as should be the case with non-IPv6-capable routers or ISPs), then I
would strongly advise starting by figuring out if the behaviour
described in this patch has regressed.
--
IPV6 causes slow internet access
https://bugs.launchpad.net/bugs/313218
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