Export type of l2tpeth interfaces to userspace
(/sys/class/net/<iface>/uevent).
Signed-off-by: NGuillaume Nault <g.nault@alphalink.fr>
Acked-by: NJames Chapman <jchapman@katalix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>