[    1.984927] ip (248) used greatest stack depth: 12832 bytes left
[    2.016683] ip (251) used greatest stack depth: 12376 bytes left
[    3.143194] ip (282) used greatest stack depth: 12344 bytes left
[   16.357256] mpls_gso: MPLS GSO support
[   22.431418] ip (2142) used greatest stack depth: 12160 bytes left
[  801.639912] blackhole_netdev_xmit(): Dropping skb.
[  801.639993] blackhole_netdev_xmit(): Dropping skb.
[  801.640035] blackhole_netdev_xmit(): Dropping skb.
[  801.640072] blackhole_netdev_xmit(): Dropping skb.