[    1.897728] ip (245) used greatest stack depth: 12376 bytes left
[    2.460796] ip (279) used greatest stack depth: 12344 bytes left
[   15.986088] mpls_gso: MPLS GSO support
[  634.053059] ip (19399) used greatest stack depth: 12328 bytes left
[  634.834469] ip (19427) used greatest stack depth: 12288 bytes left
[  876.416553] blackhole_netdev_xmit(): Dropping skb.
[  876.416625] blackhole_netdev_xmit(): Dropping skb.
[  876.416665] blackhole_netdev_xmit(): Dropping skb.
[  876.416702] blackhole_netdev_xmit(): Dropping skb.