[    2.115214] ip (245) used greatest stack depth: 12376 bytes left
[    2.781664] ip (279) used greatest stack depth: 12344 bytes left
[   16.641751] mpls_gso: MPLS GSO support
[  633.134695] ip (29569) used greatest stack depth: 12288 bytes left
[  861.606170] blackhole_netdev_xmit(): Dropping skb.
[  861.606243] blackhole_netdev_xmit(): Dropping skb.
[  861.606283] blackhole_netdev_xmit(): Dropping skb.
[  861.606318] blackhole_netdev_xmit(): Dropping skb.