[    6.397449] ip (456) used greatest stack depth: 12192 bytes left
[   15.978439] mpls_gso: MPLS GSO support
[  983.031465] blackhole_netdev_xmit(): Dropping skb.
[  983.031565] blackhole_netdev_xmit(): Dropping skb.
[  983.031629] blackhole_netdev_xmit(): Dropping skb.
[  983.031701] blackhole_netdev_xmit(): Dropping skb.