From: Florian Westphal <fw@strlen.de>
Date: Wed, 11 Jul 2012 22:56:57 +0200
Can be used to match packets against netfilter ip sets created via ipset(8).
skb->sk_iif is used as 'incoming interface', skb->dev is 'outgoing interface'.
Since ipset is usually called from netfilter, the ematch
initializes a fake xt_action_param, pulls the ip header into the
linear area and also sets skb->data to the IP header (otherwise
matching Layer 4 set types doesn't work).
Tested-by: Mr Dash Four <redacted>
Signed-off-by: Florian Westphal <fw@strlen.de>
Applied, thanks.