[    2.412965] ip (285) used greatest stack depth: 12384 bytes left
[    6.168255] ip (476) used greatest stack depth: 12320 bytes left
[   15.310150] mpls_gso: MPLS GSO support
[  957.727377] blackhole_netdev_xmit(): Dropping skb.
[  957.727440] blackhole_netdev_xmit(): Dropping skb.
[  957.727471] blackhole_netdev_xmit(): Dropping skb.
[  957.727498] blackhole_netdev_xmit(): Dropping skb.