[    2.778664] ip (282) used greatest stack depth: 12360 bytes left
[    2.986256] ip (296) used greatest stack depth: 12344 bytes left
[   16.784768] mpls_gso: MPLS GSO support
[  436.544959] hrtimer: interrupt took 2520363 ns
[  648.864045] ip (21421) used greatest stack depth: 12328 bytes left
[  758.774289] blackhole_netdev_xmit(): Dropping skb.
[  758.774353] blackhole_netdev_xmit(): Dropping skb.
[  758.774384] blackhole_netdev_xmit(): Dropping skb.
[  758.774418] blackhole_netdev_xmit(): Dropping skb.