[    2.607440] ip (281) used greatest stack depth: 12360 bytes left
[    6.115557] ip (449) used greatest stack depth: 12344 bytes left
[   15.250469] mpls_gso: MPLS GSO support
[ 1039.368210] blackhole_netdev_xmit(): Dropping skb.
[ 1039.368282] blackhole_netdev_xmit(): Dropping skb.
[ 1039.368315] blackhole_netdev_xmit(): Dropping skb.
[ 1039.368350] blackhole_netdev_xmit(): Dropping skb.