[    1.694235] ip (264) used greatest stack depth: 12280 bytes left
[    1.722171] ip (267) used greatest stack depth: 12232 bytes left
[   13.772842] mpls_gso: MPLS GSO support
[  976.398248] blackhole_netdev_xmit(): Dropping skb.
[  976.398360] blackhole_netdev_xmit(): Dropping skb.
[  976.398432] blackhole_netdev_xmit(): Dropping skb.
[  976.398492] blackhole_netdev_xmit(): Dropping skb.