[PATCH] iptables: "cluster" match uses IPv6-specific code without ifdef

[Steven Noonan]

The symbol __ipv6_addr_type is only available with CONFIG_IPV6 or
CONFIG_IPV6_MODULE.

Cc: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Steven Noonan <steven@xxxxxxxxxxxxxx>
---
 net/netfilter/xt_cluster.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/net/netfilter/xt_cluster.c b/net/netfilter/xt_cluster.c
index ad5bd89..38091f3 100644
--- a/net/netfilter/xt_cluster.c
+++ b/net/netfilter/xt_cluster.c
@@ -66,10 +66,12 @@ xt_cluster_is_multicast_addr(const struct sk_buff *skb, u_int8_t family)
 	case NFPROTO_IPV4:
 		is_multicast = ipv4_is_multicast(ip_hdr(skb)->daddr);
 		break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 	case NFPROTO_IPV6:
 		is_multicast = ipv6_addr_type(&ipv6_hdr(skb)->daddr) &
 						IPV6_ADDR_MULTICAST;
 		break;
+#endif
 	default:
 		WARN_ON(1);
 		break;
-- 
1.6.2

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