[    2.689654] ip (281) used greatest stack depth: 12344 bytes left
[   14.721859] ip (1226) used greatest stack depth: 12288 bytes left
[   15.893774] mpls_gso: MPLS GSO support
[  646.616423] ip (27876) used greatest stack depth: 12032 bytes left
[  776.632760] blackhole_netdev_xmit(): Dropping skb.
[  776.632827] blackhole_netdev_xmit(): Dropping skb.
[  776.632863] blackhole_netdev_xmit(): Dropping skb.
[  776.632901] blackhole_netdev_xmit(): Dropping skb.