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Date: Tue, 16 Feb 2010 21:21:23 -0300
Message-ID: <e51d9a111002161621j3c5f542bsd409b1b2be61707f@mail.gmail.com>
From: Martin Lopreiato <martin.lopreiato@gmail.com>
To: Chuck Swiger <cswiger@mac.com>
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Cc: freebsd-net@freebsd.org
Subject: Re: Forging ipv6 addresses?
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X-List-Received-Date: Wed, 17 Feb 2010 00:21:25 -0000

hi,

On Feb 16, 2010, at 2:09 PM, Martin Lopreiato wrote:
> > note: if i use a configured address, my code works perfectly. so the
> > error message i'm getting when trying to forge an ipv6 address does
> > not seem to be related to a bug in my code.
>
> You're not trying to send this traffic from a jail, by any chance?
>

no.


Consider using PCAP/BPF interface or a wrapper like libnet....
>

pcap/bpf wouldn't do: i'd have to take care of neighbor-discovery and
routing myself. libnet would probably do, but.. hey! it's a simple ipv6
packet. and at this point, i'm curious about whether there's a limitation on
the addresses you can "forge" with sendmsg()

fwiw, linux seems to have an ipv6 version of ipv5}4 hdrinclude socket
option. that's nice, too.

thanx,
/m