[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Slow connections in Debian squeeze

On Sun,06.Dec.09, 15:39:59, Andrew Sackville-West wrote:
> there are clearly some differences. the lenny machine is making a 
> AAAA? request (whatever that means) while the squeeze machine is 
> making both a A? and AAAA? requests. And the responses are different. 
> This behavior is consistent across attempts.

This sounds like an ipv4/ipv6 issue. Maybe this NEWS.Debian entry for
libc6 has the solution:

glibc (2.9-8) unstable; urgency=low

  Starting with version 2.9-8, unified IPv4/IPv6 lookup have been enabled
  in the glibc's resolver. This is faster, fixes numerous of bugs, but is
  problematic on some broken DNS servers and/or wrongly configured 
  If such a DNS server is detected, the resolver switches (permanently
  for that process) to a mode where the second request is sent only when
  the first answer has been received. This means the first request will
  be timeout, but subsequent requests should be fast again. This 
  behaviour can be enabled permanently by adding 'options single-request'
  to /etc/resolv.conf.  

 -- Aurelien Jarno <aurel32@debian.org>  Thu, 23 Apr 2009 21:14:32 +0200

Offtopic discussions among Debian users and developers:

Attachment: signature.asc
Description: Digital signature

Reply to: