[    1.961041] ip (251) used greatest stack depth: 12376 bytes left
[    2.512760] ip (282) used greatest stack depth: 12344 bytes left
[   12.311318] ip (1080) used greatest stack depth: 12328 bytes left
[   15.621227] mpls_gso: MPLS GSO support
[  790.976846] blackhole_netdev_xmit(): Dropping skb.
[  790.976913] blackhole_netdev_xmit(): Dropping skb.
[  790.976948] blackhole_netdev_xmit(): Dropping skb.
[  790.976981] blackhole_netdev_xmit(): Dropping skb.