Hi Guys, I have been having this problem aswell on my desktop and two laptops, with Dapper, Edgy, and Feisty.
I think networkmanager is assigning the IP of the router as the top DNS server in resolv.conf. If I leave it there, DNS lookups are really slow, whatever the application (browser, imap, apt-get etc), adding 10 to 15 seconds to the resolution time, and also hindering multiple simultaneous requests from succeeding, especially say opening websites in different tabs in quick succession. Removing this IP from the config file fixes this problem, and resolutions occur in a second or so. If you take a look at Wireshark captures, it seems that there may be a problem with IPv6 which is enabled by default in Ubuntu, and particular routers. I was told on #ubuntu+1 that this is likely to be the result of "your router's DNS responds to AAAA requests with A results and this seems to delay ubuntu from trying an A lookup", but I don't really understand such things. I really hope that you can fix this, and do let me know if there is more info that I can supply? Thanks, Tom ** Attachment added: "Wireshark Capture with Router IP as DNS" http://librarian.launchpad.net/7133681/capture -- Very slow resolution when using a router for DNS https://bugs.launchpad.net/bugs/92040 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
