[    1.766650] ip (257) used greatest stack depth: 12280 bytes left
[    2.175930] ip (291) used greatest stack depth: 12248 bytes left
[   13.412294] mpls_gso: MPLS GSO support
[  977.856433] blackhole_netdev_xmit(): Dropping skb.
[  977.856498] blackhole_netdev_xmit(): Dropping skb.
[  977.856541] blackhole_netdev_xmit(): Dropping skb.
[  977.856576] blackhole_netdev_xmit(): Dropping skb.