[    2.532990] ip (293) used greatest stack depth: 12384 bytes left
[   16.076333] mpls_gso: MPLS GSO support
[  633.101967] ip (19817) used greatest stack depth: 12256 bytes left
[  780.836619] blackhole_netdev_xmit(): Dropping skb.
[  780.836691] blackhole_netdev_xmit(): Dropping skb.
[  780.836736] blackhole_netdev_xmit(): Dropping skb.
[  780.836780] blackhole_netdev_xmit(): Dropping skb.
[  956.488137] ip (19120) used greatest stack depth: 12232 bytes left