Problems with gif tunnels

[Neo-Vortex]

On Wed, 8 Jun 2005, Greg 'groggy' Lehey wrote:

> On Wednesday,  8 June 2005 at 10:49:46 +0200, Jeremie Le Hen wrote:
> > Hi Greg,
> >
> >> I don't see any reply.  But that's not surprising, since the echo
> >> packet doesn't get delivered.  To summarize again:
> >>
> >> - rl0 is the external interface (-> DSL), IP 150.101.14.10.
> >> - xl0 is the internal interface, IP 192.109.197.143.
> >> - encapsulated packet comes in from 203.16.215.227 with data from IP
> >>   192.83.231.16 for 192.109.197.145.  It should go out xl0.
> >> - It doesn't.  No further indication of why not.
> >
> > I saw your commit on gif(4) manual page precising that gif(4) does not
> > do GRE tunnels.  Does it represent a solution to your problem ?
>
> Heh.  Yes :-)
>
> It's currently pushing 7:30 pm, and I was going to send out a reply
> tomorrow.  But indeed, it seems that Linux people prefer GRE tunnels,
> we prefer (with good reason) IP tunnels, and the whole issue was one
> of documentation.  After changing my tunnel from GRE to IP, it worked
> (and works) like a charm.
>
> But there's more to come, including a docco for Internode to hand to
> their FreeBSD customers (sadly, once they were FreeBSD, but they moved
> to Linux).  Watch this space.
>
> Greg
> --
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What is the difference between gre and gif tunnels anyway... the man mages
were not that informative...

~NVX