[    2.596083] ip (281) used greatest stack depth: 12360 bytes left
[    2.649175] ip (285) used greatest stack depth: 12344 bytes left
[    9.259858] ip (758) used greatest stack depth: 12328 bytes left
[   15.862675] mpls_gso: MPLS GSO support
[   25.048675] ip (2373) used greatest stack depth: 12192 bytes left
[  710.103912] blackhole_netdev_xmit(): Dropping skb.
[  710.103977] blackhole_netdev_xmit(): Dropping skb.
[  710.104019] blackhole_netdev_xmit(): Dropping skb.
[  710.104051] blackhole_netdev_xmit(): Dropping skb.