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net/ipv6/route.c: packets originating on device match lo 

Fix to allow IPv6 packets originating locally to match rules with the "iff"
set to "lo".  This allows IPv6 rule matching work the same as it does for
IPv4.  From the iproute2 man page:

   iif NAME
		  select  the incoming device to match.  If the interface is loop‐
		  back, the rule only matches packets originating from this  host.
		  This  means that you may create separate routing tables for for‐
		  warded and local packets and, hence, completely segregate them.

Signed-off-by: David McCullough <david_mccullough@mcafee.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David McCullough 2012-06-25 15:42:26 +00:00 committed by David S. Miller
parent 91fa0cbc0c
commit 4dc27d1cf3
1 changed files with 2 additions and 0 deletions
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net/ipv6/route.c
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@ -937,6 +937,8 @@ struct dst_entry * ip6_route_output(struct net *net, const struct sock *sk,
{
int flags = 0;
fl6->flowi6_iif = net->loopback_dev->ifindex;
if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr))
flags |= RT6_LOOKUP_F_IFACE;