[    2.050989] ip (253) used greatest stack depth: 12328 bytes left
[   16.676620] mpls_gso: MPLS GSO support
[  655.347347] ip (27660) used greatest stack depth: 12304 bytes left
[  657.215659] blackhole_netdev_xmit(): Dropping skb.
[  657.215722] blackhole_netdev_xmit(): Dropping skb.
[  657.215765] blackhole_netdev_xmit(): Dropping skb.
[  657.215817] blackhole_netdev_xmit(): Dropping skb.
[  660.201712] blackhole_netdev_xmit(): Dropping skb.
[  660.201767] blackhole_netdev_xmit(): Dropping skb.
[  660.201801] blackhole_netdev_xmit(): Dropping skb.
[  660.201834] blackhole_netdev_xmit(): Dropping skb.
[  713.599198] blackhole_netdev_xmit(): Dropping skb.
[  713.599258] blackhole_netdev_xmit(): Dropping skb.
[  713.599293] blackhole_netdev_xmit(): Dropping skb.
[  713.599325] blackhole_netdev_xmit(): Dropping skb.