[    1.557213] ip (264) used greatest stack depth: 12280 bytes left
[    1.902281] ip (295) used greatest stack depth: 12248 bytes left
[   11.391546] mpls_gso: MPLS GSO support
[  991.134288] blackhole_netdev_xmit(): Dropping skb.
[  991.134375] blackhole_netdev_xmit(): Dropping skb.
[  991.134429] blackhole_netdev_xmit(): Dropping skb.
[  991.134500] blackhole_netdev_xmit(): Dropping skb.