From 599e63ea72995ff36d445cd5bd9849ecdd4590ae Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Wed, 21 May 2008 13:21:49 +0200
Subject: check for missing IPv6 address before hashing

---
 src/cache.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/cache.c')

diff --git a/src/cache.c b/src/cache.c
index 4162661..ed76680 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -75,6 +75,14 @@ static uint32_t hash(const void *data, struct hashtable *table)
 			ret = __hash4(u->ct, table);
 			break;
 		case AF_INET6:
+			if (!nfct_attr_is_set(u->ct, ATTR_ORIG_IPV6_SRC) ||
+			    !nfct_attr_is_set(u->ct, ATTR_ORIG_IPV6_DST)) {
+				dlog(LOG_ERR, "missing IPv6 address. "
+					      "You forgot to load "
+					      "nf_conntrack_ipv6?");
+				return 0;
+			}
+
 			ret = __hash6(u->ct, table);
 			break;
 		default:
-- 
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