On Wed, May 29, 2002 at 09:21:30PM +0100, Antony Stone wrote: > GRE is an IP protocol, in the same way as TCP or UDP are, therefore you > couldn't forward it at the ethernet layer - you need to strip off the IP > header before you know it's GRE inside.
Just a small note. Within the IPv4 header, there is a field called "protocol". This field identifies the encapsulated data (47 in case of GRE, eg). If you strip off the IPv4 header there is no way you can say what the remaining part is ;-) Ramin > Hope this makes sense. > > > Antony
