[    1.926358] ip (259) used greatest stack depth: 12288 bytes left
[    1.959714] ip (262) used greatest stack depth: 12240 bytes left
[   15.238671] mpls_gso: MPLS GSO support
[  921.198955] blackhole_netdev_xmit(): Dropping skb.
[  921.199024] blackhole_netdev_xmit(): Dropping skb.
[  921.199062] blackhole_netdev_xmit(): Dropping skb.
[  921.199097] blackhole_netdev_xmit(): Dropping skb.