old tunneling protocol?

Neal Cardwell (cardwell@cs.washington.edu)
Mon, 28 Sep 1998 23:22:26 -0700 (PDT)

anyone know anything about this protocol, seen in the tcpdump source code?

* This module implements support for decoding GRE (Generic Routing
* Encapsulation) tunnels; they're documented in RFC1701 and RFC1702.
* This code only supports the IP encapsulation thereof.

thanks,
neal