tree c0e2606135bef4b786b3ee60126d02d64528c0a4
parent 2b60af017880f7dc35d1fac65f48fc94f8a3c1ec
author Patrick McHardy <kaber@trash.net> 1346001241 +0200
committer Pablo Neira Ayuso <pablo@netfilter.org> 1346288412 +0200

netfilter: nf_conntrack: restrict NAT helper invocation to IPv4

The NAT helpers currently only handle IPv4 packets correctly. Restrict
invocation of the helpers to IPv4 in preparation of IPv6 NAT.

Signed-off-by: Patrick McHardy <kaber@trash.net>