retitle 266742 kdelibs: [ipv6] dns servers that are broken cause slow lookups severity 266742 wishlist tags + wontfix stop
On Sat, Sep 25, 2004 at 10:52:16AM +0200, Julien Valroff wrote: > Hi ! > > I can reproduce the problem. Just try following sites : > http://www.caisse-epargne.fr (French bank) > and http://www.anpe.fr (French national job center) > > I also run an updated Sid with kde 3.3, and the environement variable does > not > seem to fix the problem. > > Cheers, > Julien I'll reopen this bug and mark it wontfix since it is not a bug in KDE but might confuse users. The problem is the above listed sites DNS servers are broken. I talked to someone on #debian-devel about it and this was what they had to say: 19:23 < Md> calc: well, let's start from noticing that 1/3 of the servers for the first zone are unreachable 19:23 < calc> Md: works when -t aaaa isn't specified 19:24 < Md> calc: broken load balancer 19:24 < Md> calc: the stupid thing just ignores queries for non-A records 19:25 < plaisthos> calc: slow dns server? 19:25 < Md> plaisthos: no, broken DNS server If you do a lookup on a random site like the following it works just fine, but on the specific sites you list they do not respond with anything at all they just hang which is a problem with their site. I don't run my own dns server and tested several other sites all with responses in the 0.050-0.070 timespan. I am not going to "fix" it by disabling ipv6 for everyone, feel free to contact those sites to let them know their dns servers are broken. As to why Mozilla/Opera/etc aren't slow, I do not know unless they have ipv6 support disabled. Thanks, Chris Cheney --- calc-amd64:~# time dig -t aaaa www.cheney.cx ; <<>> DiG 9.2.4 <<>> -t aaaa www.cheney.cx ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44944 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.cheney.cx. IN AAAA ;; ANSWER SECTION: www.cheney.cx. 14400 IN CNAME cheney.cx. ;; AUTHORITY SECTION: cheney.cx. 10726 IN SOA dns3.surpasshosting.com. root.pico.surpasshosting.com. 2004022106 28800 7200 3600000 86400 ;; Query time: 66 msec ;; SERVER: 192.168.0.254#53(192.168.0.254) ;; WHEN: Sat Sep 25 19:18:54 2004 ;; MSG SIZE rcvd: 114 real 0m0.069s user 0m0.002s sys 0m0.000s --- calc-amd64:~# time dig -t aaaa www.caisse-epargne.fr ; <<>> DiG 9.2.4 <<>> -t aaaa www.caisse-epargne.fr ;; global options: printcmd ;; connection timed out; no servers could be reached real 0m10.004s user 0m0.001s sys 0m0.001s ---
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