On Wednesday 29 May 2002 11:20 pm, Patrick Schaaf wrote: > Antony, > > > I still maintain that you can't do it at the ethernet layer :-) > > Hmm. Do you mean it cannot be done in principle, or that some > existing implementation can't do it?
I mean that I don't think you can do it with ebtables (which was the original question), and that you can't tell a GRE packet from, for example, TCP or UDP by looking at the ethernet header - you have to look inside the ethernet packet at the IP header to find out whether it's GRE or not. Antony.
