On 2007/05/17 18:02, Alex Berdan wrote: > I was curious about the GRE implementation on OpenBSD as in CISCO > there are keepalives
Unfortunately, despite GRE being documented across a number of RFCs, there's no mention of this. Looks like it's probably a cisco- proprietary extension, I couldn't find any docs on packet formats or implementation. Have you come across any?
