Extend DLCI's over tunnels

Looking for some working examples of extending frame relay DLCI's over GRE (etc...) tunnels. Hopefully without having to use MPLS or L2TPv3 (only have 36xx chassis to work with)

Have you thought about using policy routing? I looked at a similar application once, although I never actually tried it.
One of the options within policy routing allows you to send all specified traffic to another interface. My idea was to to apply the policy route to one (say) sub-interface with an ACL to match all packets, and set the next hop and a GRE tunnel. Then do the same in the reverse direction.
I'd be interested to hear if this works.
Andy

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