From: Wilco Baan Hofman <wilco@baanhofman.nl>
To: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: netdev@vger.kernel.org
Subject: Re: /128 link-local subnet on 6in4 (sit) tunnels?
Date: Wed, 27 Mar 2013 19:20:54 +0100 [thread overview]
Message-ID: <1364408454.15362.1.camel@localhost> (raw)
In-Reply-To: <20130327181146.GB23223@order.stressinduktion.org>
On Wed, 2013-03-27 at 19:11 +0100, Hannes Frederic Sowa wrote:
> On Wed, Mar 27, 2013 at 04:37:53PM +0100, Wilco Baan Hofman wrote:
> >
> > Weird, but sure, here goes:
> >
> > ip tunnel add tunv6-uplink1 mode sit remote 192.168.1.1 local
> > 192.168.1.21
> > ip link set tunv6-uplink1 up mtu 1472
>
> In my test I didn't specify the local address so addr.s6_addr32[3]
> seems to be zero. I'll have to search the RFCs why this is the case.
See section 3.7, rfc4213:
The interface identifier [RFC3513] for such an interface may be based
on the 32-bit IPv4 address of an underlying interface, or formed
using some other means, as long as it is unique from the other tunnel
endpoint with a reasonably high probability.
http://tools.ietf.org/html/rfc4213
-- Wilco
next prev parent reply other threads:[~2013-03-27 18:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-26 22:04 /128 link-local subnet on 6in4 (sit) tunnels? Wilco Baan Hofman
2013-03-27 15:12 ` Hannes Frederic Sowa
2013-03-27 15:37 ` Wilco Baan Hofman
2013-03-27 18:11 ` Hannes Frederic Sowa
2013-03-27 18:20 ` Wilco Baan Hofman [this message]
2013-03-27 18:35 ` Hannes Frederic Sowa
2013-03-27 19:12 ` Wilco Baan Hofman
2013-03-28 13:00 ` Wilco Baan Hofman
2013-03-28 13:12 ` Hannes Frederic Sowa
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