[    2.406631] ip (280) used greatest stack depth: 12344 bytes left
[   11.088825] ip (951) used greatest stack depth: 12160 bytes left
[   15.695071] mpls_gso: MPLS GSO support
[  970.490310] blackhole_netdev_xmit(): Dropping skb.
[  970.490382] blackhole_netdev_xmit(): Dropping skb.
[  970.490412] blackhole_netdev_xmit(): Dropping skb.
[  970.490438] blackhole_netdev_xmit(): Dropping skb.