linux-kernel - Re: klibc ipconfig misbehavior in a network with DHCP snooping

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Message-ID: <20071210144639.GB16790@stro.at>
Date:	Mon, 10 Dec 2007 15:46:39 +0100
From:	maximilian attems <max@...o.at>
To:	Ken Simon <ninkendo@...il.com>
Cc:	klibc@...or.com, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org
Subject: Re: klibc ipconfig misbehavior in a network with DHCP snooping

[ added klibc ml to cc ]

> I found a problem with klibc's "ipconfig" program, or at least, behavior
> that breaks DHCP on my thin clients (LTSP 5.0). It has to do with setting
> the giaddr field on dhcp_send in dhcp_proto.c, line 164.

thank you for digging into it.

>  Otherwise, the relay agent SHALL forward any received DHCP packet
>  with a valid non-zero giaddr WITHOUT adding any relay agent options.
>  Per RFC 2131 <
>  ;http://www.faqs.org/rfcs /rfc2131.html>, it shall also NOT modify the
>  giaddr value.

got also a single klibc Debian bug report on it:
-> http://bugs.debian.org/432977

i'm adding the patch to my branch and will submit it to hpa asap.


-- 
maks
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