[    2.400779] ip (294) used greatest stack depth: 12248 bytes left
[    5.715630] ip (468) used greatest stack depth: 11976 bytes left
[   13.250364] mpls_gso: MPLS GSO support
[ 1121.694697] blackhole_netdev_xmit(): Dropping skb.
[ 1121.694778] blackhole_netdev_xmit(): Dropping skb.
[ 1121.694826] blackhole_netdev_xmit(): Dropping skb.
[ 1121.694877] blackhole_netdev_xmit(): Dropping skb.