Pedro Ribeiro a écrit : > On Thu, Nov 19, 2009 at 12:03 AM, Aurelien Jarno <aurel...@aurel32.net> wrote: >> On Wed, Nov 18, 2009 at 09:40:03PM +0000, Pedro Ribeiro wrote: >>> Package: libc6 >>> Version: 2.10.1-7 >>> Severity: important >>> >>> When using Firefox, Google Chrome, Opera, Synaptic and other applications >>> which use DNS, I always have to wait a long time (2 to 10 seconds) for a >>> host to resolve (i.e. messages like "Resolving host", "Looking up >>> http://whatever";, etc). >>> >>> I always thought that this was a problem of my internet connection. >>> I could never track the origin of it until finally like 2 hours ago I >>> stumbled across this: >>> https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/417757 >>> >>> To test if I had this problem, I opened up Firefox and got to about:config, >>> entered ipv6 and set "network.dns.disableIPv6" to false. Immediately, every >>> DNS query was extremely fast and browsing was up to par to my high speed >>> internet connection. >>> To do a definite test, I added "ipv6_disable=1" to my kernel command line >>> and after that all the applications above were having much faster DNS >>> queries. >>> >>> This is a rather serious bug that I have been experiencing ever since >>> upgrading to testing (right after lenny's release), and always blamed on my >>> ISP/wireless connection/configuration/etc, while finding it strange that >>> every Mac or Windows PC near me using the same connection appeared to be >>> much faster on DNS queries. >>> >>> I guess there must be much more users affected by this and like me, they >>> have no clue why. >>> >>> It may be caused by a recent version of libc6, because the bug above is >>> marked as "karmic regression" (the latest ubuntu is the karmic one, 9.10) >>> and a friend of mine who is using lenny doesn't appear to have the same >>> problem. >>> >>> Pardon me if this as already been reported, I searched around but could not >>> find a Debian version of this bug. >>> >> Does adding "options single-request" to /etc/resolv.conf fixes your >> problems? >> >> If so, it is due to a broken DNS server on your ISP side, and a bug >> in Firefox and other application which explicitely ask to resolve >> IPv6 adresses by not passing AI_ADDRCONFIG to getaddrinfo(). >> >> -- >> Aurelien Jarno GPG: 1024D/F1BCDB73 >> aurel...@aurel32.net http://www.aurel32.net >> > > Hi, > > you are right! It does solve my problem. But the strange thing is that > I moved to another country in the last 2 months, but I've had this > problem in my previous country also. So I guess its an application and > not a DNS problem?
Are you using the same modem/router and using it as a DNS server? > What do you think I should do, file a bug with all the respective > applications, or just wait for the Ubuntu bug to go upstream / sort > itself out? There is no real plan to fix it. Maybe implement one more workaround if we found how broken is your DNS server. -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
