[    2.552630] ip (280) used greatest stack depth: 12360 bytes left
[    2.602419] ip (284) used greatest stack depth: 12344 bytes left
[    2.748021] ip (295) used greatest stack depth: 12064 bytes left
[   15.032008] mpls_gso: MPLS GSO support
[  830.503936] blackhole_netdev_xmit(): Dropping skb.
[  830.504013] blackhole_netdev_xmit(): Dropping skb.
[  830.504050] blackhole_netdev_xmit(): Dropping skb.
[  830.504098] blackhole_netdev_xmit(): Dropping skb.