[    2.505998] ip (294) used greatest stack depth: 12248 bytes left
[   13.044172] mpls_gso: MPLS GSO support
[  656.948730] blackhole_netdev_xmit(): Dropping skb.
[  656.948791] blackhole_netdev_xmit(): Dropping skb.
[  656.948830] blackhole_netdev_xmit(): Dropping skb.
[  656.948864] blackhole_netdev_xmit(): Dropping skb.