[    1.800636] make (203) used greatest stack depth: 12928 bytes left
[    2.156308] ip (260) used greatest stack depth: 12416 bytes left
[    2.856921] ip (294) used greatest stack depth: 12384 bytes left
[   18.201089] mpls_gso: MPLS GSO support
[   19.599213] ip (1470) used greatest stack depth: 12360 bytes left
[   32.810386] ip (2599) used greatest stack depth: 12320 bytes left
[ 1236.182572] blackhole_netdev_xmit(): Dropping skb.
[ 1236.182653] blackhole_netdev_xmit(): Dropping skb.
[ 1236.182692] blackhole_netdev_xmit(): Dropping skb.
[ 1236.182730] blackhole_netdev_xmit(): Dropping skb.