diff -Nur -x '*.orig' -x '*.rej' e-smith-base-4.18.0/root/etc/e-smith/templates/etc/sysconfig/network/40GATEWAYDEV mezzanine_patched_e-smith-base-4.18.0/root/etc/e-smith/templates/etc/sysconfig/network/40GATEWAYDEV
--- e-smith-base-4.18.0/root/etc/e-smith/templates/etc/sysconfig/network/40GATEWAYDEV	2005-11-20 21:28:08.000000000 -0700
+++ mezzanine_patched_e-smith-base-4.18.0/root/etc/e-smith/templates/etc/sysconfig/net40GATEWAYDEV	2007-01-30 16:16:44.000000000 -0700
@@ -1,5 +1,8 @@
 {
-    return "" unless (defined $ExternalInterface);
+    return "" unless (defined $ExternalInterface && defined $GatewayIP);
 
-    return "GATEWAYDEV=$ExternalInterface{Name}";
+    my $dev = ($ExternalInterface{Configuration} eq 'disabled') ?
+	$InternalInterface{Name} :
+	$ExternalInterface{Name};
+    return "GATEWAYDEV=$dev";
 }