[    2.710726] ip (282) used greatest stack depth: 12344 bytes left
[    6.128686] ip (451) used greatest stack depth: 12288 bytes left
[   16.653768] mpls_gso: MPLS GSO support
[  937.815906] blackhole_netdev_xmit(): Dropping skb.
[  937.815971] blackhole_netdev_xmit(): Dropping skb.
[  937.816007] blackhole_netdev_xmit(): Dropping skb.
[  937.816043] blackhole_netdev_xmit(): Dropping skb.