Add a "gateway" flag so that user can set up a gateway machine automatically

from sysinstall.

etc/netstart

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$Id: netstart,v 1.32 1995/05/17 04:46:56 rgrimes Exp $
+#	$Id: netstart,v 1.33 1995/06/25 09:35:56 asami Exp $
 #	From: @(#)netstart	5.9 (Berkeley) 3/30/91
 
 # Note that almost all the user-configurable behavior is no longer in
@@ -54,6 +54,11 @@ for i in ${static_routes}; do
 	route add ${route_args}
 done
 
+if [ "x$gateway" != "xNO ]; then
+	echo 'configuring host as a gateway.'
+	sysctl -w net.inet.ip.forwarding=1
+fi
+
 if [ "x$gated" != "xNO" -o "x$routedflags" != "xNO" ] ; then
 	echo -n starting routing daemons:
 

etc/sysconfig

@@ -4,7 +4,7 @@
 # This is sysconfig - a file full of useful variables that you can set 
 # to change the default startup behavior of your system.
 #
-#	$Id: sysconfig,v 1.18 1995/07/20 16:26:26 wollman Exp $
+#	$Id: sysconfig,v 1.19 1995/08/10 16:25:57 ache Exp $
 
 ######################### Start Of Syscons Section #######################
 
@@ -158,6 +158,9 @@ savecore=NO
 # Set to YES if you want to run Kerberos authentication
 kerberos_server=NO
 
+# If you want this host to be a gateway, set to YES.
+gateway=NO
+
 # Set to YES if you want to run gated
 gated=NO