[    2.497344] ip (284) used greatest stack depth: 12384 bytes left
[   15.354810] mpls_gso: MPLS GSO support
[   25.676963] ip (2591) used greatest stack depth: 12320 bytes left
[  796.410442] blackhole_netdev_xmit(): Dropping skb.
[  796.410504] blackhole_netdev_xmit(): Dropping skb.
[  796.410534] blackhole_netdev_xmit(): Dropping skb.
[  796.410566] blackhole_netdev_xmit(): Dropping skb.