[    1.807041] ip (258) used greatest stack depth: 12288 bytes left
[    2.286797] ip (292) used greatest stack depth: 12272 bytes left
[   12.738035] mpls_gso: MPLS GSO support
[  651.186708] blackhole_netdev_xmit(): Dropping skb.
[  651.186813] blackhole_netdev_xmit(): Dropping skb.
[  651.186868] blackhole_netdev_xmit(): Dropping skb.
[  651.186920] blackhole_netdev_xmit(): Dropping skb.