+++ /dev/null
---- a/net/ipv4/netfilter/ip_tables.c
-+++ b/net/ipv4/netfilter/ip_tables.c
-@@ -84,9 +84,11 @@ ip_packet_match(const struct iphdr *ip,
- if (ipinfo->flags & IPT_F_NO_DEF_MATCH)
- return true;
-
-- if (FWINV((ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr,
-+ if (FWINV(ipinfo->smsk.s_addr &&
-+ (ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr,
- IPT_INV_SRCIP) ||
-- FWINV((ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr,
-+ FWINV(ipinfo->dmsk.s_addr &&
-+ (ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr,
- IPT_INV_DSTIP)) {
- dprintf("Source or dest mismatch.\n");
-