tree c5e1d0164c2919c9b82ffc502195ef25b64a261d
parent 89259088c1b7fecb43e8e245dc931909132a4e03
author Alin Nastac <alin.nastac@gmail.com> 1542805230 +0100
committer Pablo Neira Ayuso <pablo@netfilter.org> 1543273940 +0100

netfilter: ipv6: Preserve link scope traffic original oif

When ip6_route_me_harder is invoked, it resets outgoing interface of:
  - link-local scoped packets sent by neighbor discovery
  - multicast packets sent by MLD host
  - multicast packets send by MLD proxy daemon that sets outgoing
    interface through IPV6_PKTINFO ipi6_ifindex

Link-local and multicast packets must keep their original oif after
ip6_route_me_harder is called.

Signed-off-by: Alin Nastac <alin.nastac@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>