[    2.506565] ip (289) used greatest stack depth: 12344 bytes left
[   15.557379] mpls_gso: MPLS GSO support
[  944.522472] blackhole_netdev_xmit(): Dropping skb.
[  944.522552] blackhole_netdev_xmit(): Dropping skb.
[  944.522593] blackhole_netdev_xmit(): Dropping skb.
[  944.522630] blackhole_netdev_xmit(): Dropping skb.