GRE packets

Anyone have a definitive list or info on network operators who definately
allow or definately disallow GRE packets across their networks.

Sorry for the semi-operational content :slight_smile:


This could kill IP-GRE VPNs indiscriminately.

I realize this will kill the tunnels. My point is to find out what
networks, if any, may do this. A client is planning on doing tunneling
and I am probing for feasibility.