[    2.499007] ip (280) used greatest stack depth: 12344 bytes left
[   15.632410] mpls_gso: MPLS GSO support
[   16.840989] ip (1458) used greatest stack depth: 12288 bytes left
[  741.380487] blackhole_netdev_xmit(): Dropping skb.
[  741.380585] blackhole_netdev_xmit(): Dropping skb.
[  741.380644] blackhole_netdev_xmit(): Dropping skb.
[  741.380708] blackhole_netdev_xmit(): Dropping skb.