[    1.870864] ip (254) used greatest stack depth: 12416 bytes left
[    2.391093] ip (285) used greatest stack depth: 12384 bytes left
[   14.542554] mpls_gso: MPLS GSO support
[  628.808285] ip (29256) used greatest stack depth: 12368 bytes left
[  634.723790] ip (29641) used greatest stack depth: 12320 bytes left
[  741.838589] blackhole_netdev_xmit(): Dropping skb.
[  741.838648] blackhole_netdev_xmit(): Dropping skb.
[  741.838679] blackhole_netdev_xmit(): Dropping skb.
[  741.838711] blackhole_netdev_xmit(): Dropping skb.
[  878.419529] blackhole_netdev_xmit(): Dropping skb.
[  878.419592] blackhole_netdev_xmit(): Dropping skb.
[  878.419628] blackhole_netdev_xmit(): Dropping skb.
[  878.419663] blackhole_netdev_xmit(): Dropping skb.