Fix checksum for outgoing etherip/ipip packets from enc interfaces.

diff --git a/sys/net/if_enc.c b/sys/net/if_enc.c
index 9f7edda..329a342 100644 (file)
--- a/sys/net/if_enc.c
+++ b/sys/net/if_enc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_enc.c,v 1.27 2000/04/10 07:34:53 angelos Exp $     */
+/*     $OpenBSD: if_enc.c,v 1.28 2000/04/12 18:05:47 angelos Exp $     */
 
 /*
  * The authors of this code are John Ioannidis (ji@tla.org),
@@ -261,6 +261,17 @@ struct ifnet *ifp;
            mp = NULL;
        }
 
+#ifdef INET
+       /* Fix header checksum for IPv4 */
+        if (tdb->tdb_dst.sa.sa_family == AF_INET)
+       {
+           struct ip *ip;
+
+           ip = mtod(m, struct ip *);
+           ip->ip_sum = in_cksum(m, ip->ip_hl << 2);
+        }
+#endif
+
        protoflag = tdb->tdb_dst.sa.sa_family;
 
        /* IPsec packet processing -- skip encapsulation */