diff options
| author | YOSHIFUJI Hideaki | 2008-06-20 01:33:57 +0200 |
|---|---|---|
| committer | David S. Miller | 2008-06-20 01:33:57 +0200 |
| commit | f630e43a215a3129d0c1173cae0bce6ea4855cf7 (patch) | |
| tree | 9bd9c07a59622dfb166624f79d2d71f7e076aa13 /net/ipv6/ip6_input.c | |
| parent | ipv6: Remove options header when setsockopt's optlen is 0 (diff) | |
| download | kernel-qcow2-linux-f630e43a215a3129d0c1173cae0bce6ea4855cf7.tar.gz kernel-qcow2-linux-f630e43a215a3129d0c1173cae0bce6ea4855cf7.tar.xz kernel-qcow2-linux-f630e43a215a3129d0c1173cae0bce6ea4855cf7.zip | |
ipv6: Drop packets for loopback address from outside of the box.
[ Based upon original report and patch by Karsten Keil. Karsten
has verified that this fixes the TAHI test case "ICMPv6 test
v6LC.5.1.2 Part F". -DaveM ]
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_input.c')
| -rw-r--r-- | net/ipv6/ip6_input.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 4e5c8615832c..17eb48b8e329 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -102,6 +102,15 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt if (hdr->version != 6) goto err; + /* + * RFC4291 2.5.3 + * A packet received on an interface with a destination address + * of loopback must be dropped. + */ + if (!(dev->flags & IFF_LOOPBACK) && + ipv6_addr_loopback(&hdr->daddr)) + goto err; + skb->transport_header = skb->network_header + sizeof(*hdr); IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr); |