[    1.902882] ip (250) used greatest stack depth: 12376 bytes left
[    2.473113] ip (281) used greatest stack depth: 12360 bytes left
[    2.518090] ip (286) used greatest stack depth: 12344 bytes left
[    8.163341] ip (680) used greatest stack depth: 12248 bytes left
[   15.027569] mpls_gso: MPLS GSO support
[  840.058220] blackhole_netdev_xmit(): Dropping skb.
[  840.058292] blackhole_netdev_xmit(): Dropping skb.
[  840.058331] blackhole_netdev_xmit(): Dropping skb.
[  840.058369] blackhole_netdev_xmit(): Dropping skb.
[ 1029.196434] blackhole_netdev_xmit(): Dropping skb.
[ 1029.196510] blackhole_netdev_xmit(): Dropping skb.
[ 1029.196547] blackhole_netdev_xmit(): Dropping skb.
[ 1029.196580] blackhole_netdev_xmit(): Dropping skb.
[ 1054.048206] blackhole_netdev_xmit(): Dropping skb.
[ 1054.048272] blackhole_netdev_xmit(): Dropping skb.
[ 1054.048307] blackhole_netdev_xmit(): Dropping skb.
[ 1054.048343] blackhole_netdev_xmit(): Dropping skb.