Comment 92 for bug 417757
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| Philipp Kern (pkern) wrote Re: [karmic regression] all network apps / browsers suffer from multi-second delays by default due to IPv6 DNS lookups | #92 |
One could argue that the resolver could refrain from issuing IPv6 queries when no IPv6 connectivity is available. (I.e. just link-local addresses on the interfaces.) It might be too expensive to check this on each and every query but it would relieve the problem a bit.
Disabling IPv6 in Firefox by default is a very bad solution as we want to achieve IPv6 support out of the box. I also encountered those broken resolvers in the wild, though, and it resulted in me configuring sane DNS servers for the single Alice access point through NetworkManager, which works just fine. If there would be an anycasted DNS resolving offer out in the wild we could use that instead, but even then you usually rely on using the local DNS servers in case they give you different views in the corporate environment (to see local hosts or route requests differently).