PIMv2 I think the issue is with multicast.
I want to create a GRE tunnel that supports multicast PIMv2. I am seeing the server sending PIMv2 Hello messages to my gre tunnel but my machine is not responding.
ip tunnel add [g0] mode gre remote [remote ip] local [local ip] ttl 32
ip link set [g0] multicast on
ip link set [g0] up
ip addr add [x.x.x.x/8] dev g0
After creating this gre tunnel, the route is shown in my route table and my ip addr show dev g0 also shows that the interface is up.
The server is still sending PIMv2 Hello messages.