[    1.937927] ip (252) used greatest stack depth: 12328 bytes left
[   15.524559] mpls_gso: MPLS GSO support
[   24.712094] ip (2375) used greatest stack depth: 12304 bytes left
[  630.170719] ip (24330) used greatest stack depth: 12192 bytes left
[  675.687900] blackhole_netdev_xmit(): Dropping skb.
[  675.687969] blackhole_netdev_xmit(): Dropping skb.
[  675.688015] blackhole_netdev_xmit(): Dropping skb.
[  675.688054] blackhole_netdev_xmit(): Dropping skb.
[  809.614768] blackhole_netdev_xmit(): Dropping skb.
[  809.614833] blackhole_netdev_xmit(): Dropping skb.
[  809.614869] blackhole_netdev_xmit(): Dropping skb.
[  809.614905] blackhole_netdev_xmit(): Dropping skb.