[    2.595058] ip (279) used greatest stack depth: 12344 bytes left
[   16.720253] mpls_gso: MPLS GSO support
[  923.742750] blackhole_netdev_xmit(): Dropping skb.
[  923.742850] blackhole_netdev_xmit(): Dropping skb.
[  923.742899] blackhole_netdev_xmit(): Dropping skb.
[  923.742945] blackhole_netdev_xmit(): Dropping skb.