Module Name:	src
Committed By:	hwr
Date:		Sun Sep 13 20:27:48 UTC 1998

Modified Files:
	src/sys/conf: files
	src/sys/netinet: in.h in_proto.c ip_mroute.c
Added Files:
	src/sys/net: if_gre.c if_gre.h
	src/sys/netinet: ip_gre.c ip_gre.h
Log Message:
Add a gre tunnel pseudo network device. Gre = generic route encapsulation.
This device shows up like any other network interface and can be used to
tunnel L3 protocols as e.g. IP over IP.