--- zzzz-none-000/linux-2.6.19.2/net/ipv4/ipvs/ip_vs_proto_udp.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/net/ipv4/ipvs/ip_vs_proto_udp.c	2007-01-11 07:38:19.000000000 +0000
@@ -122,10 +122,10 @@
 {
 	uhdr->check =
 		ip_vs_check_diff(~oldip, newip,
-				 ip_vs_check_diff(oldport ^ htons(0xFFFF),
+				 ip_vs_check_diff(oldport ^ htonl(0xFFFF),
 						  newport, uhdr->check));
 	if (!uhdr->check)
-		uhdr->check = -1;
+		uhdr->check = htonl(0xFFFF);
 }
 
 static int
@@ -173,7 +173,7 @@
 						cp->protocol,
 						(*pskb)->csum);
 		if (udph->check == 0)
-			udph->check = -1;
+			udph->check = htonl(0xFFFF);
 		IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
 			  pp->name, udph->check,
 			  (char*)&(udph->check) - (char*)udph);
@@ -228,7 +228,7 @@
 						cp->protocol,
 						(*pskb)->csum);
 		if (udph->check == 0)
-			udph->check = -1;
+			udph->check = 0xFFFF;
 		(*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
 	}
 	return 1;