[    1.990118] ip (247) used greatest stack depth: 12376 bytes left
[    2.650297] ip (281) used greatest stack depth: 12344 bytes left
[   16.977860] mpls_gso: MPLS GSO support
[  633.718693] ip (20780) used greatest stack depth: 12328 bytes left
[ 1172.975695] blackhole_netdev_xmit(): Dropping skb.
[ 1172.975776] blackhole_netdev_xmit(): Dropping skb.
[ 1172.975810] blackhole_netdev_xmit(): Dropping skb.
[ 1172.975846] blackhole_netdev_xmit(): Dropping skb.