[    1.941966] ip (248) used greatest stack depth: 12376 bytes left
[    2.550567] ip (282) used greatest stack depth: 12360 bytes left
[    2.604016] ip (286) used greatest stack depth: 12344 bytes left
[   16.529187] mpls_gso: MPLS GSO support
[   29.603225] ip (2625) used greatest stack depth: 12304 bytes left
[  641.035211] ip (20389) used greatest stack depth: 12192 bytes left
[  849.891149] blackhole_netdev_xmit(): Dropping skb.
[  849.891227] blackhole_netdev_xmit(): Dropping skb.
[  849.891274] blackhole_netdev_xmit(): Dropping skb.
[  849.891322] blackhole_netdev_xmit(): Dropping skb.
[ 1227.923096] blackhole_netdev_xmit(): Dropping skb.
[ 1227.923171] blackhole_netdev_xmit(): Dropping skb.
[ 1227.923210] blackhole_netdev_xmit(): Dropping skb.
[ 1227.923259] blackhole_netdev_xmit(): Dropping skb.