This directory contains kernel sources for gateway screen facility.

These have been tested only for Ultrix 3.0, although they
should also work with Ultrix 3.1.

Don't forget to add net/gw_screen.c and netinet/ip_screen.c to conf/files
and then re-run /etc/config.

NEW FILES:
./net/gw_screen.c
./net/gw_screen.h
	Protocol-independent code

./netinet/ip_screen.c
	Protocol-specific interface

MODIFIED FILES:
(Context diffs for Ultrix 3.0 sources are provided for these
 three files.  The changes to netinet/ip_icmp.c might not be
 needed for non-Ultrix kernels.)

./netinet/ip_input.c
	Modified to pass packets through screen if forwarding

./netinet/ip_icmp.c
	Bug fix; required so that ICMP messages are generated in
	response to smallish packets.

./net/if.c
	ioctl linkage
