[    3.058888] ip (281) used greatest stack depth: 12272 bytes left
[   11.874850] ip (810) used greatest stack depth: 12016 bytes left
[   19.289428] mpls_gso: MPLS GSO support
[  726.492183] blackhole_netdev_xmit(): Dropping skb.
[  726.492251] blackhole_netdev_xmit(): Dropping skb.
[  726.492294] blackhole_netdev_xmit(): Dropping skb.
[  726.492334] blackhole_netdev_xmit(): Dropping skb.