From owner-freebsd-net@FreeBSD.ORG  Mon Jan 19 12:45:58 2004
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To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Mon, 19 Jan 2004 20:44:34 GMT."
             <Pine.BSF.4.53.0401192035030.94399@e0-0.zab2.int.zabbadoz.net> 
Date: Mon, 19 Jan 2004 21:45:49 +0100
Message-ID: <98634.1074545149@critter.freebsd.dk>
cc: net@FreeBSD.ORG
cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Subject: Re: Multihomed UDP server 
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In message <Pine.BSF.4.53.0401192035030.94399@e0-0.zab2.int.zabbadoz.net>, "Bjo
ern A. Zeeb" writes:

>You mean for FreeBSD or in ISBN 0-13-490012-X ?
>
>For FreeBSD it is man 4 ip:
>
>--- cite ---
>     If the IP_RECVDSTADDR option is enabled on a SOCK_DGRAM socket, the
>     recvmsg(2) call will return the destination IP address for a UDP data-
>     gram.  The msg_control field in the msghdr structure points to a buffer
>     that contains a cmsghdr structure followed by the IP address.  The
>     cmsghdr fields have the following values:
>--- cite ---

That really belongs on udp(4) more than ip(4)...

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.