Hi Laz,
I have two points to discuss:
- Does the use of tunnel key allow the transmission of multicast traffic over GRE tunnels?
- In a local Lab, I tried to build two GRE tunnels based on loopback interfaces. Bothe tunnels have same source and destination IPv4 address. First tunnel interface has an IPv6 address (the tunnel is supposed to carry IPv6 traffic), second tunnel interface has an IPv4 address (the tunnel is supposed to carry IPv4 traffic). The observed behaviour is that always the second tunnel to be configured is up, the second one is always down. e.g. if I first configure the IPv6 over IPv4 tunnel and then the IPv4 over IPv4 tunnel, then it’s the latter that works.
Is this behaviour expected?
Thanks
Alex