Re: Occasional DNS error in Squid 2.6

lör 2006-07-29 klockan 12:47 +0200 skrev Henrik Nordstrom:
> lör 2006-07-29 klockan 09:35 +0200 skrev Guido Serassio:
> > Hi,
> >
> > I have found an occasional DNS resolution error when browsing
> > www.microsoft.com.
> >
> > I have seen the error only few times, less then 10, but the odd thing
> > is that this happens always only with www.microsoft.com and sometime
> > it was also happened on 2.5:
> >
> > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=367963
> >
> > A page reload is always successful.
>
> Could be Bug #1602. www.microsoft.com is dangerously close to the UDP
> DNS size limit of 512 octets..

Could also be a broken bind version.. some versions of bind have had
problems with CNAME chains and TTL expiry.

a ethereal trace of port 53 traffic will tell what the problem is.

Regards
Henrik