From: Adam Denenberg <adam@dberg.org>
To: Doug McNaught <doug@mcnaught.org>
Cc: linux-os@analogic.com, Jan Harkes <jaharkes@cs.cmu.edu>,
Kyle Moffett <mrmacman_g4@mac.com>,
linux-kernel@vger.kernel.org,
Jan Engelhardt <jengelh@linux01.gwdg.de>
Subject: Re: bind() udp behavior 2.6.8.1
Date: Wed, 15 Dec 2004 15:48:50 -0500 [thread overview]
Message-ID: <1103143730.6825.19.camel@sucka> (raw)
In-Reply-To: <87oegv5lz1.fsf@asmodeus.mcnaught.org>
but this would be an issue with glibc then correct?
On Wed, 2004-12-15 at 15:45, Doug McNaught wrote:
> Adam Denenberg <adam@dberg.org> writes:
>
> > sorry for any confusion, but i am not referring to the Identification
> > field in the IP header but rather the "Transaction ID" field in the DNS
> > query portion of the packet. I can reproduce this behavior on our linux
> > system where if i pump gethostbyname_r requests on the system at some
> > point it will reuse a transaction id in the DNS request. This is my
> > lastest discovery in what is causing the requests to fail thru the
> > firewall. So far my research has not turned up any reason as to why the
> > kernel would be re-using a transaction ID in the dns request.
>
> That would be your DNS software reusing the transaction ID, since it's
> part of the packet data, not the UDP header. The kernel has nothing
> to do with it.
>
> -Doug
>
next prev parent reply other threads:[~2004-12-15 20:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-14 15:38 bind() udp behavior 2.6.8.1 Adam Denenberg
2004-12-14 16:04 ` Jan Engelhardt
2004-12-14 16:42 ` Adam Denenberg
2004-12-14 16:44 ` Jan Engelhardt
2004-12-14 17:01 ` Adam Denenberg
2004-12-14 17:10 ` Jan Engelhardt
2004-12-14 17:38 ` Adam Denenberg
2004-12-14 17:49 ` Jan Engelhardt
2004-12-15 0:43 ` Wichert Akkerman
2004-12-16 5:49 ` Willy Tarreau
2004-12-14 22:07 ` Kyle Moffett
2004-12-15 2:23 ` Adam Denenberg
2004-12-15 3:19 ` Kyle Moffett
2004-12-15 14:16 ` Adam Denenberg
2004-12-15 19:07 ` Jan Harkes
2004-12-15 19:22 ` Adam Denenberg
2004-12-15 20:06 ` linux-os
2004-12-15 20:19 ` Adam Denenberg
2004-12-15 20:45 ` Doug McNaught
2004-12-15 20:48 ` Adam Denenberg [this message]
2004-12-15 20:57 ` Doug McNaught
2004-12-16 6:10 ` Willy Tarreau
2004-12-16 14:24 ` Adam Denenberg
2004-12-16 14:51 ` Jan Harkes
2004-12-16 15:00 ` Adam Denenberg
2004-12-16 6:03 ` Willy Tarreau
2004-12-16 14:17 ` Adam Denenberg
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