[    1.876319] ip (266) used greatest stack depth: 12232 bytes left
[    2.334623] ip (294) used greatest stack depth: 12200 bytes left
[   13.749132] mpls_gso: MPLS GSO support
[  648.549709] blackhole_netdev_xmit(): Dropping skb.
[  648.549813] blackhole_netdev_xmit(): Dropping skb.
[  648.549883] blackhole_netdev_xmit(): Dropping skb.
[  648.549943] blackhole_netdev_xmit(): Dropping skb.
[  813.820071] blackhole_netdev_xmit(): Dropping skb.
[  813.820141] blackhole_netdev_xmit(): Dropping skb.
[  813.820204] blackhole_netdev_xmit(): Dropping skb.
[  813.820262] blackhole_netdev_xmit(): Dropping skb.
[  818.241064] blackhole_netdev_xmit(): Dropping skb.
[  818.241133] blackhole_netdev_xmit(): Dropping skb.
[  818.241184] blackhole_netdev_xmit(): Dropping skb.
[  818.241235] blackhole_netdev_xmit(): Dropping skb.