diff -ur --unidirectional-new-file skipsrc-1.0.orig/skip/bdcmod/fast_des_cbc/descbc.c skipsrc-1.0/skip/bdcmod/fast_des_cbc/descbc.c
--- skipsrc-1.0.orig/skip/bdcmod/fast_des_cbc/descbc.c	Fri Oct 25 13:12:36 1996
+++ skipsrc-1.0/skip/bdcmod/fast_des_cbc/descbc.c	Mon Dec 15 17:41:10 1997
@@ -424,7 +424,7 @@
 		return;
 	cs=(struct des_cbc_state *)csp;
 
-	*payload = IPPROTO_ENCAP;
+	*payload = IPPROTO_IPIP;
 
 	ks = (unsigned long *)(cs->keysched);
 	mod8 = (len & 0x07);	/* technically this is (len % 8) */