diff options
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 0f56e9e69a8f..b2be749d2217 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -345,6 +345,16 @@ static int ip6_forward_proxy_check(struct sk_buff *skb) } } + /* + * The proxying router can't forward traffic sent to a link-local + * address, so signal the sender and discard the packet. This + * behavior is clarified by the MIPv6 specification. + */ + if (ipv6_addr_type(&hdr->daddr) & IPV6_ADDR_LINKLOCAL) { + dst_link_failure(skb); + return -1; + } + return 0; } @@ -403,8 +413,13 @@ int ip6_forward(struct sk_buff *skb) } if (pneigh_lookup(&nd_tbl, &hdr->daddr, skb->dev, 0)) { - if (ip6_forward_proxy_check(skb)) + int proxied = ip6_forward_proxy_check(skb); + if (proxied > 0) return ip6_input(skb); + else if (proxied < 0) { + IP6_INC_STATS(IPSTATS_MIB_INDISCARDS); + goto drop; + } } if (!xfrm6_route_forward(skb)) { |