[    2.670020] ip (279) used greatest stack depth: 12344 bytes left
[   15.880624] mpls_gso: MPLS GSO support
[  639.454633] ip (23698) used greatest stack depth: 12192 bytes left
[  786.351560] blackhole_netdev_xmit(): Dropping skb.
[  786.351624] blackhole_netdev_xmit(): Dropping skb.
[  786.351657] blackhole_netdev_xmit(): Dropping skb.
[  786.351693] blackhole_netdev_xmit(): Dropping skb.