[    2.299725] ip (250) used greatest stack depth: 12288 bytes left
[    3.129951] ip (284) used greatest stack depth: 12272 bytes left
[   19.776824] mpls_gso: MPLS GSO support
[   31.680811] ip (2440) used greatest stack depth: 12144 bytes left
[  647.132549] ip (20268) used greatest stack depth: 12000 bytes left
[ 1228.549019] blackhole_netdev_xmit(): Dropping skb.
[ 1228.549089] blackhole_netdev_xmit(): Dropping skb.
[ 1228.549125] blackhole_netdev_xmit(): Dropping skb.
[ 1228.549161] blackhole_netdev_xmit(): Dropping skb.