[    1.683121] ip (259) used greatest stack depth: 12280 bytes left
[   12.488000] mpls_gso: MPLS GSO support
[  943.998434] blackhole_netdev_xmit(): Dropping skb.
[  943.998524] blackhole_netdev_xmit(): Dropping skb.
[  943.998573] blackhole_netdev_xmit(): Dropping skb.
[  943.998620] blackhole_netdev_xmit(): Dropping skb.