[    1.922508] ip (253) used greatest stack depth: 12376 bytes left
[    2.464510] ip (281) used greatest stack depth: 12344 bytes left
[   14.981933] mpls_gso: MPLS GSO support
[  639.460794] ip (26293) used greatest stack depth: 12192 bytes left
[  876.924771] blackhole_netdev_xmit(): Dropping skb.
[  876.924849] blackhole_netdev_xmit(): Dropping skb.
[  876.924894] blackhole_netdev_xmit(): Dropping skb.
[  876.924938] blackhole_netdev_xmit(): Dropping skb.