Index: kernel-2.5/net/core/netfilter.c
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.5/net/core/netfilter.c,v
retrieving revision 1.1.1.10
diff -u -r1.1.1.10 netfilter.c
--- kernel-2.5/net/core/netfilter.c	8 Oct 2003 19:24:04 -0000	1.1.1.10
+++ kernel-2.5/net/core/netfilter.c	8 Mar 2004 10:52:39 -0000
@@ -639,6 +639,7 @@
 #ifdef CONFIG_IP_ROUTE_FWMARK
 		fl.nl_u.ip4_u.fwmark = (*pskb)->nfmark;
 #endif
+		fl.proto = iph->protocol;
 		if (ip_route_output_key(&rt, &fl) != 0)
 			return -1;