From: Doug McNaught <doug@mcnaught.org>
To: Adam Denenberg <adam@dberg.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 15:45:54 -0500 [thread overview]
Message-ID: <87oegv5lz1.fsf@asmodeus.mcnaught.org> (raw)
In-Reply-To: <1103141991.6825.17.camel@sucka> (Adam Denenberg's message of "Wed, 15 Dec 2004 15:19:51 -0500")
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 20:46 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 [this message]
2004-12-15 20:48 ` Adam Denenberg
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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