[    2.028570] ip (253) used greatest stack depth: 12416 bytes left
[    2.061714] ip (256) used greatest stack depth: 12368 bytes left
[    2.588977] ip (284) used greatest stack depth: 12360 bytes left
[   15.176757] mpls_gso: MPLS GSO support
[  696.245250] blackhole_netdev_xmit(): Dropping skb.
[  696.245313] blackhole_netdev_xmit(): Dropping skb.
[  696.245355] blackhole_netdev_xmit(): Dropping skb.
[  696.245393] blackhole_netdev_xmit(): Dropping skb.
[  829.195103] blackhole_netdev_xmit(): Dropping skb.
[  829.195165] blackhole_netdev_xmit(): Dropping skb.
[  829.195201] blackhole_netdev_xmit(): Dropping skb.
[  829.195238] blackhole_netdev_xmit(): Dropping skb.