[   14.723398] ip (247) used greatest stack depth: 12376 bytes left
[   15.425190] ip (281) used greatest stack depth: 12344 bytes left
[   26.600756] ip (1216) used greatest stack depth: 12288 bytes left
[   27.970571] mpls_gso: MPLS GSO support
[  650.024626] ip (30917) used greatest stack depth: 12192 bytes left
[  894.349650] blackhole_netdev_xmit(): Dropping skb.
[  894.349719] blackhole_netdev_xmit(): Dropping skb.
[  894.349765] blackhole_netdev_xmit(): Dropping skb.
[  894.349798] blackhole_netdev_xmit(): Dropping skb.
[ 1211.995322] blackhole_netdev_xmit(): Dropping skb.
[ 1211.995406] blackhole_netdev_xmit(): Dropping skb.
[ 1211.995463] blackhole_netdev_xmit(): Dropping skb.
[ 1211.995512] blackhole_netdev_xmit(): Dropping skb.