Comment 19 for bug 417757

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Jeroen Massar (massar) wrote : Re: [karmic regression] all network apps / browsers suffer from multi-second delays by default due to IPv6 DNS lookups

For everybody not reading the other comments, #7 actually explains what goes on....

Yes, indeed, probably the best solution is to use just install a local DNS resolver (pdns-resolver), which hits the roots/gtld's etc itself. This is not very friendly to the general Internet, but heck, with the largest DNS server doing short TTLs and based on geography it might not matter too much.

Thus kids, "apt-get install pdns-recursor" and edit your /etc/resolv.conf to point to 127.0.0.1 when you get hit by this issue.