[    2.674747] ip (282) used greatest stack depth: 12344 bytes left
[    6.308417] ip (446) used greatest stack depth: 12304 bytes left
[    8.624102] ip (654) used greatest stack depth: 12288 bytes left
[   15.089653] ip (1176) used greatest stack depth: 12192 bytes left
[   16.604543] mpls_gso: MPLS GSO support
[   30.526927] ip (2618) used greatest stack depth: 12160 bytes left
[  740.646065] blackhole_netdev_xmit(): Dropping skb.
[  740.646134] blackhole_netdev_xmit(): Dropping skb.
[  740.646170] blackhole_netdev_xmit(): Dropping skb.
[  740.646206] blackhole_netdev_xmit(): Dropping skb.