Symptom
When configuring multicast routing over a GRE tunnel, and the tunnel is placed into a different VRF than underlay (e.g. "vrf member" is set, but tunnel destination is reachable via global routing table), the GRE tunnel will be seen in the OIL, but actual traffic won't be replicated.
Further Problem Description
The documentation has been modified to mention "GRE tunnel can be a member of a VRF only if the source or destination interfaces are members of the same VRF." This functionality is expected to work in the "fixed releases" once they are out.
