--- linux-2.4.22-net3/net/ipsec/ipsec_tunnel.c	Sun Nov 16 18:09:04 2003
+++ linux-2.4.22-net4/net/ipsec/ipsec_tunnel.c	Sat Nov 22 23:10:16 2003
@@ -714,6 +714,8 @@
 
 	if(hard_header_len == 0) { /* no hard header present */
 		hard_header_stripped = 1;
+		/* otherwise it panics in clip_start_xmit()/skb_push() */
+		hard_header_len = physdev->hard_header_len;
 	}
 
 #ifdef CONFIG_IPSEC_DEBUG