[    2.781643] ip (281) used greatest stack depth: 12360 bytes left
[    3.001752] ip (295) used greatest stack depth: 12344 bytes left
[    6.139932] ip (450) used greatest stack depth: 12192 bytes left
[   16.571923] mpls_gso: MPLS GSO support
[  680.058660] blackhole_netdev_xmit(): Dropping skb.
[  680.058730] blackhole_netdev_xmit(): Dropping skb.
[  680.058782] blackhole_netdev_xmit(): Dropping skb.
[  680.058826] blackhole_netdev_xmit(): Dropping skb.
[  867.254154] blackhole_netdev_xmit(): Dropping skb.
[  867.254207] blackhole_netdev_xmit(): Dropping skb.
[  867.254237] blackhole_netdev_xmit(): Dropping skb.
[  867.254277] blackhole_netdev_xmit(): Dropping skb.
[ 1116.263240] blackhole_netdev_xmit(): Dropping skb.
[ 1116.263308] blackhole_netdev_xmit(): Dropping skb.
[ 1116.263340] blackhole_netdev_xmit(): Dropping skb.
[ 1116.263372] blackhole_netdev_xmit(): Dropping skb.