ipv6: Fix redirect with VRF
[ Upstream commit 31680ac2 ] IPv6 redirect is broken for VRF. __ip6_route_redirect walks the FIB entries looking for an exact match on ifindex. With VRF the flowi6_oif is updated by l3mdev_update_flow to the l3mdev index and the FLOWI_FLAG_SKIP_NH_OIF set in the flags to tell the lookup to skip the device match. For redirects the device match is requires so use that flag to know when the oif needs to be reset to the skb device index. Fixes: ca254490 ("net: Add VRF support to IPv6 stack") Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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