[    1.885628] ip (248) used greatest stack depth: 12376 bytes left
[    2.496679] ip (282) used greatest stack depth: 12344 bytes left
[    4.590619] ip (412) used greatest stack depth: 12328 bytes left
[   14.084545] mpls_gso: MPLS GSO support
[   21.062692] ip (2236) used greatest stack depth: 12160 bytes left
[  681.014370] blackhole_netdev_xmit(): Dropping skb.
[  681.014435] blackhole_netdev_xmit(): Dropping skb.
[  681.014471] blackhole_netdev_xmit(): Dropping skb.
[  681.014507] blackhole_netdev_xmit(): Dropping skb.
[ 1165.736080] blackhole_netdev_xmit(): Dropping skb.
[ 1165.736158] blackhole_netdev_xmit(): Dropping skb.
[ 1165.736198] blackhole_netdev_xmit(): Dropping skb.
[ 1165.736242] blackhole_netdev_xmit(): Dropping skb.