[    2.325711] ip (259) used greatest stack depth: 12416 bytes left
[    3.056490] ip (293) used greatest stack depth: 12384 bytes left
[   10.295413] ip (697) used greatest stack depth: 12360 bytes left
[   18.944544] mpls_gso: MPLS GSO support
[  796.564735] blackhole_netdev_xmit(): Dropping skb.
[  796.564804] blackhole_netdev_xmit(): Dropping skb.
[  796.564839] blackhole_netdev_xmit(): Dropping skb.
[  796.564872] blackhole_netdev_xmit(): Dropping skb.
[  962.543378] ip (21198) used greatest stack depth: 12256 bytes left