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Date: Sat, 11 Jun 2005 00:14:00 -0700
To: Greg 'groggy' Lehey <grog@FreeBSD.org>
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From: stephen@dino.dnsalias.com (Stephen J. Bevan)
Cc: FreeBSD-net@freebsd.org, Jeremie Le Hen <jeremie@le-hen.org>,
	Gianmarco Giovannelli <gmarco@masternet.it>
Subject: Re: Problems with gif tunnels
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Greg 'groggy' Lehey writes:
 > Ah, my bad.  But nos-tun also does IP-IP, so he was using the correct
 > tool.  So that doesn't seem to be the problem here.

By default non-tun uses protocol 94 which is not compatible with
gif(4) and Linux IPIP, both of which protocol 4.  There is an option
(-p) to tell nos-tun to use protocol 4 but either Gianmarco didn't use
it or there was some other kind of problem.