[    2.566584] ip (280) used greatest stack depth: 12272 bytes left
[   15.227745] mpls_gso: MPLS GSO support
[  630.225853] ip (27071) used greatest stack depth: 12248 bytes left
[  779.756721] blackhole_netdev_xmit(): Dropping skb.
[  779.756787] blackhole_netdev_xmit(): Dropping skb.
[  779.756821] blackhole_netdev_xmit(): Dropping skb.
[  779.756852] blackhole_netdev_xmit(): Dropping skb.
[  925.679558] blackhole_netdev_xmit(): Dropping skb.
[  925.679625] blackhole_netdev_xmit(): Dropping skb.
[  925.679683] blackhole_netdev_xmit(): Dropping skb.
[  925.679723] blackhole_netdev_xmit(): Dropping skb.