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authorJan Engelhardt <jengelh@computergmbh.de>2008-01-14 23:41:34 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:02:24 -0800
commit13b0e83b5b52d1a0ab87772ecc93fe91b2740386 (patch)
treef47b4874d121012f48099ef6af1c671687e2569f /net/netfilter
parent17b0d7ef658583842da75eebf8001dc617f0b52e (diff)
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[NETFILTER]: xt_pkttype: Add explicit check for IPv4
In the PACKET_LOOPBACK case, the skb data was always interpreted as IPv4, but that is not valid for IPv6, obviously. Fix this by adding an extra condition to check for AF_INET. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter')
-rw-r--r--net/netfilter/xt_pkttype.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netfilter/xt_pkttype.c b/net/netfilter/xt_pkttype.c
index 2762449..080f324 100644
--- a/net/netfilter/xt_pkttype.c
+++ b/net/netfilter/xt_pkttype.c
@@ -31,7 +31,8 @@ pkttype_mt(const struct sk_buff *skb, const struct net_device *in,
const struct xt_pkttype_info *info = matchinfo;
if (skb->pkt_type == PACKET_LOOPBACK)
- type = ipv4_is_multicast(ip_hdr(skb)->daddr)
+ type = match->family == AF_INET &&
+ ipv4_is_multicast(ip_hdr(skb)->daddr)
? PACKET_MULTICAST
: PACKET_BROADCAST;
else