[    2.198718] ip (258) used greatest stack depth: 12944 bytes left
[    2.235798] ip (261) used greatest stack depth: 12624 bytes left
[    2.936128] ip (292) used greatest stack depth: 12384 bytes left
[   18.061917] mpls_gso: MPLS GSO support
[   29.825815] ip (2465) used greatest stack depth: 12320 bytes left
[ 1258.331849] blackhole_netdev_xmit(): Dropping skb.
[ 1258.331915] blackhole_netdev_xmit(): Dropping skb.
[ 1258.331953] blackhole_netdev_xmit(): Dropping skb.
[ 1258.331996] blackhole_netdev_xmit(): Dropping skb.