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Date:      Wed, 15 May 2002 13:22:50 -0700
From:      Lars Eggert <larse@ISI.EDU>
To:        Mikko Hyvarinen <mikko.hyvarinen@morphy.iki.fi>
Cc:        net@freebsd.org, snap-users@kame.net
Subject:   Re: tun device & IPv6
Message-ID:  <3CE2C39A.2010803@isi.edu>
References:  <3CE1A2C0.8050201@isi.edu> <20020515220541.C95759@morphy.iki.fi>
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[-- Attachment #1 --]
Mikko Hyvarinen wrote:
>>could someone with more knowledge of the tun device please take a look 
>>at the code around line 387 in net/if_tun.c? It looks like tunoutput() 
>>drops all packets here that aren't of the AF_INET family - most notably, 
>>it drops IPv6 packets.
>>
>>We hacked around this with the simple fix below, but I'm not sure if 
>>there are any drawbacks...
>>
> Is there a specific reason why you are not using the "multi-af" mode?
> IPv6 works just nicely with /usr/sbin/ppp (PPPoE), which uses if_tun in
> "multi-af" mode.

The specific reason was that I didn't know about it :-) I'm currently 
patching net/vtund so it uses multi-af mode.

Lars
-- 
Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

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