ipv4: mpls: fix mpls_xmit for iptunnel
When using mpls over gre/gre6 setup, rt->rt_gw4 address is not set, the same for rt->rt_gw_family. Therefore, when rt->rt_gw_family is checked in mpls_xmit(), neigh_xmit() call is skipped. As a result, such setup doesn't work anymore. This issue was found with LTP mpls03 tests. Fixes: 1550c171 ("ipv4: Prepare rtable for IPv6 gateway") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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