Gre Tunnel from a Switch To Linux Server does not work.

Arista 7060CX-32S

I set GRE Tunnel from Arista 7060CX-32S to a Linux Server 18.04 (running VPP)

My end is fully configured.

I tried GRE from an Linux Server to Linux Server and traffic goes through and everything is working. It doesn't work when GRE from Arista 7060CX-32S to my Linux Server.

The most strange thing is that I can't ping the other end under tunnel for example (Arista 7060CX-32S end is 10.0.0.1) my end under tunnel for example (10.0.0.2)

I can only ping 10.0.0.1, once the Arista 7060CX-32S pings 10.0.0.2, after couple hours once the Arista 7060CX-32S stops pinging my end 10.0.0.2, I can't ping 10.0.0.1.

So yea I've read multiple documentation and j can't find a reason for this :(