From owner-freebsd-net  Wed Nov  8  3: 1:56 2000
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Message-ID: <3A093283.48BE41D8@elischer.org>
Date: Wed, 08 Nov 2000 03:01:23 -0800
From: Julian Elischer <julian@elischer.org>
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To: Luigi Rizzo <rizzo@aciri.org>
Cc: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>, tmoestl@gmx.net,
	freebsd-net@FreeBSD.ORG
Subject: Re: setting source address for UDP packets
References: <200011072202.OAA03771@iguana.aciri.org>
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Luigi Rizzo wrote:
> 
> > > is there any way to set the source address of an UDP (over IPv4) packet
> > > without using bind() or changing the socket state,
> >
> > No.  This is a long-standing bug.  It shouldn't be too hard to fix if
> > you're up to a bit of kernel hacking.
> 
> you mean by adding a sendto_from() system call where you also pass
> the address for the source ?
> Or [really dirty hack here] an extended sendto() where the sockaddr
> really points to an array of two addresses (with "tolen" set

well you could use divert sockets to send UDP packets
(bleah)

> accordingly) ?
> 
>         cheers
>         luigi
> ----------------------------------+-----------------------------------------
>  Luigi RIZZO, luigi@iet.unipi.it  . ACIRI/ICSI (on leave from Univ. di Pisa)
>  http://www.iet.unipi.it/~luigi/  . 1947 Center St, Berkeley CA 94704
>  Phone: (510) 666 2927
> ----------------------------------+-----------------------------------------
> 
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-- 
      __--_|\  Julian Elischer
     /       \ julian@elischer.org
    (   OZ    ) World tour 2000
---> X_.---._/  presently in:  Budapest
            v


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