Commit 13b0e83b authored by Jan Engelhardt's avatar Jan Engelhardt Committed by David S. Miller
Browse files

[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: default avatarJan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 17b0d7ef
......@@ -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
......
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