Re: IPv6 GRE tunnel

["William Cerveny" <debian-v6@21st-century-networks.com>]

Hi Kilian,

I'm aware of IPv6 in IPv6 tunneling, but I really did want GRE tunneling
over IPv6 to reduce variability between IPv4 and IPv6 environments for a
specific application.

I'm sort of puzzled why GRE isn't implement with "ip" in IPv6.

Thanks,

Bill

On Thu, 10 Mar 2011 09:27 +0100, "Kilian Krause" <kilian@debian.org>
wrote:
> Hi Bill,
> 
> 
> On Wed, 2011-03-09 at 15:48 -0500, Bill Cerveny wrote:
> > I would like to encapsulate IPv6 packets within an IPv6 GRE tunnel (ie
> > on IPv6 transport). I can do this with a Cisco router, but the "ip"
> > command does not support GRE with IPv6. Is the capability to create an
> > IPv6 GRE planned feature of the "ip" command?  If not, is there anything
> > else with Linux that supports creation of GRE tunnels on IPv6 transport?
> > 
> > Thanks,
> > 
> > Bill Cerveny
> > 
> > /sbin/ip -6 tunnel help
> > Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]
> >           [ mode { ip6ip6 | ipip6 | any } ]
> 
> 
> I guess what you're searching for is the "ip6ip6" tunnel. GRE is IPv4
> only, but IPIP tunneling should work just fine with ipv6.
> 
> -- 
> Best regards,
> Kilian
> 
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