[    2.373086] ip (270) used greatest stack depth: 12416 bytes left
[    2.418790] ip (273) used greatest stack depth: 12368 bytes left
[    3.230152] ip (305) used greatest stack depth: 12224 bytes left
[   17.073141] mpls_gso: MPLS GSO support
[  986.065884] blackhole_netdev_xmit(): Dropping skb.
[  986.065956] blackhole_netdev_xmit(): Dropping skb.
[  986.065994] blackhole_netdev_xmit(): Dropping skb.
[  986.066048] blackhole_netdev_xmit(): Dropping skb.
[ 1135.992037] blackhole_netdev_xmit(): Dropping skb.
[ 1135.992110] blackhole_netdev_xmit(): Dropping skb.
[ 1135.992158] blackhole_netdev_xmit(): Dropping skb.
[ 1135.992199] blackhole_netdev_xmit(): Dropping skb.