[    2.693803] ip (279) used greatest stack depth: 12344 bytes left
[   16.761934] mpls_gso: MPLS GSO support
[  633.475592] ip (19266) used greatest stack depth: 12328 bytes left
[  668.829580] blackhole_netdev_xmit(): Dropping skb.
[  668.829646] blackhole_netdev_xmit(): Dropping skb.
[  668.829685] blackhole_netdev_xmit(): Dropping skb.
[  668.829728] blackhole_netdev_xmit(): Dropping skb.
[  879.354451] blackhole_netdev_xmit(): Dropping skb.
[  879.354526] blackhole_netdev_xmit(): Dropping skb.
[  879.354581] blackhole_netdev_xmit(): Dropping skb.
[  879.354636] blackhole_netdev_xmit(): Dropping skb.