[    2.047724] ip (292) used greatest stack depth: 12248 bytes left
[    7.426980] ip (833) used greatest stack depth: 12080 bytes left
[   11.126422] mpls_gso: MPLS GSO support
[  718.282436] blackhole_netdev_xmit(): Dropping skb.
[  718.282496] blackhole_netdev_xmit(): Dropping skb.
[  718.282538] blackhole_netdev_xmit(): Dropping skb.
[  718.282578] blackhole_netdev_xmit(): Dropping skb.