[    2.024402] ip (294) used greatest stack depth: 12248 bytes left
[   10.952540] mpls_gso: MPLS GSO support
[  631.623922] ip (8758) used greatest stack depth: 12232 bytes left
[  916.550840] blackhole_netdev_xmit(): Dropping skb.
[  916.550919] blackhole_netdev_xmit(): Dropping skb.
[  916.550990] blackhole_netdev_xmit(): Dropping skb.
[  916.551043] blackhole_netdev_xmit(): Dropping skb.