[    2.363295] ip (259) used greatest stack depth: 12416 bytes left
[    3.169373] ip (293) used greatest stack depth: 12384 bytes left
[   20.031811] mpls_gso: MPLS GSO support
[  679.007534] blackhole_netdev_xmit(): Dropping skb.
[  679.007614] blackhole_netdev_xmit(): Dropping skb.
[  679.007668] blackhole_netdev_xmit(): Dropping skb.
[  679.007709] blackhole_netdev_xmit(): Dropping skb.