tree dfce42ecd2ae158579862cd41f2d6320a5536245
parent bfd4b329acd5159077603d3f1873a7d761236d25
author David Ahern <dsahern@gmail.com> 1516851929 -0800
committer David S. Miller <davem@davemloft.net> 1516915322 -0500

net/ipv6: Do not allow route add with a device that is down

IPv6 allows routes to be installed when the device is not up (admin up).
Worse, it does not mark it as LINKDOWN. IPv4 does not allow it and really
there is no reason for IPv6 to allow it, so check the flags and deny if
device is admin down.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>