The ppp0 interface is renamed after the connection is established. Due
to a missing NETDEV_REGISTER event, the ledtrig-netdev isn't aware of
the renamed interface and literally ignores the device
(no tx/rx indication, led isn't switched off with 'ifdown wan').
Signed-off-by: Mathias Kresin <openwrt@kresin.me>
Backport of r48048
git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@48073 3c298f89-4303-0410-b956-a3cf2f4a3e73
14b19c7d40