[LARTC] Unnumbered GRE tunnel

[Pullus Cuetlachtli]

Hi!
Can I create the unnumbered GRE tunnel with iproute2 utility?
Can someone provide me a link/howto/example_config how to do it?
The topology is one tunnel between two linux boxes:
-- eth1-|__|-eth0 <-------------> eth0-|__|-eth1 --

I'm trying now with:
ip tu add tun1 mode gre local loc.IP remote rem.IP ttl 255 dev eth0
ip addr add tun1 0.0.0.0
ip link set tun1 up

but it doesn't succeed..
Thanks in advance for any help!
--
WBR Sagi Sh
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