Greg, > My understanding is that GRE is to IP as PPP is to SLIP: it allows > multiple protocols to be encapsulated. I've done some tracing with > Ethereal, and the only difference is a four-byte header in front of > the payload for GRE; in an IP tunnel, it's simply missing. I've > written this up in my diary > (http://www.lemis.com/grog/diary-jun2005.html#8), along with the > traces.
yes it's usually a simple four-byte header when doing a simple tunnel. But from what I have read [1] and according to what Giorgos said, it seems it can be a lot more longer, depending on the value of the five first bits of the GRE header. Enjoy your tunnel ;-). [1] http://www.networksorcery.com/enp/protocol/gre.htm -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org > _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
