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 :) Eric ============================================================================= Eric Germann Computer and Communications Technologies ekgermann@cctec.com Van Wert, OH 45891 Phone: 419 968 2640 http://www.cctec.com Fax: 419 968 2641 Network Design, Connectivity & System Integration Services A Microsoft Solution Provider "Linux.. the choice of a gnutered generation." - brad@poofy.tbn.tm