[    2.081577] ip (294) used greatest stack depth: 12200 bytes left
[   11.706554] mpls_gso: MPLS GSO support
[  699.308098] blackhole_netdev_xmit(): Dropping skb.
[  699.308312] blackhole_netdev_xmit(): Dropping skb.
[  699.308368] blackhole_netdev_xmit(): Dropping skb.
[  699.308415] blackhole_netdev_xmit(): Dropping skb.