[    1.976450] ip (260) used greatest stack depth: 12288 bytes left
[    2.581650] ip (294) used greatest stack depth: 12272 bytes left
[   15.942246] mpls_gso: MPLS GSO support
[  985.607097] blackhole_netdev_xmit(): Dropping skb.
[  985.607177] blackhole_netdev_xmit(): Dropping skb.
[  985.607216] blackhole_netdev_xmit(): Dropping skb.
[  985.607252] blackhole_netdev_xmit(): Dropping skb.