Commit 13b0e83b authored Jan 14, 2008 by Jan Engelhardt Committed by David S. Miller Jan 28, 2008

[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>

parent 17b0d7ef

net/netfilter/xt_pkttype.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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