[    2.434156] ip (278) used greatest stack depth: 12344 bytes left
[    8.507841] ip (786) used greatest stack depth: 12064 bytes left
[   14.513888] mpls_gso: MPLS GSO support
[  927.701187] blackhole_netdev_xmit(): Dropping skb.
[  927.701243] blackhole_netdev_xmit(): Dropping skb.
[  927.701275] blackhole_netdev_xmit(): Dropping skb.
[  927.701304] blackhole_netdev_xmit(): Dropping skb.