[    2.651310] ip (280) used greatest stack depth: 12360 bytes left
[    2.703598] ip (284) used greatest stack depth: 12344 bytes left
[    6.360714] ip (459) used greatest stack depth: 12192 bytes left
[   16.299384] mpls_gso: MPLS GSO support
[  725.274757] blackhole_netdev_xmit(): Dropping skb.
[  725.274825] blackhole_netdev_xmit(): Dropping skb.
[  725.274860] blackhole_netdev_xmit(): Dropping skb.
[  725.274897] blackhole_netdev_xmit(): Dropping skb.
[  971.494417] blackhole_netdev_xmit(): Dropping skb.
[  971.494490] blackhole_netdev_xmit(): Dropping skb.
[  971.494526] blackhole_netdev_xmit(): Dropping skb.
[  971.494561] blackhole_netdev_xmit(): Dropping skb.
[  976.221846] blackhole_netdev_xmit(): Dropping skb.
[  976.221919] blackhole_netdev_xmit(): Dropping skb.
[  976.221967] blackhole_netdev_xmit(): Dropping skb.
[  976.222017] blackhole_netdev_xmit(): Dropping skb.