[    1.957974] ip (254) used greatest stack depth: 12376 bytes left
[    2.656579] ip (288) used greatest stack depth: 12360 bytes left
[    2.876829] ip (303) used greatest stack depth: 12344 bytes left
[    8.894541] ip (688) used greatest stack depth: 12064 bytes left
[   16.846141] mpls_gso: MPLS GSO support
[  813.159951] blackhole_netdev_xmit(): Dropping skb.
[  813.160021] blackhole_netdev_xmit(): Dropping skb.
[  813.160088] blackhole_netdev_xmit(): Dropping skb.
[  813.160139] blackhole_netdev_xmit(): Dropping skb.
[  854.924933] blackhole_netdev_xmit(): Dropping skb.
[  854.925004] blackhole_netdev_xmit(): Dropping skb.
[  854.925055] blackhole_netdev_xmit(): Dropping skb.
[  854.925122] blackhole_netdev_xmit(): Dropping skb.
[  962.749459] blackhole_netdev_xmit(): Dropping skb.
[  962.749510] blackhole_netdev_xmit(): Dropping skb.
[  962.749542] blackhole_netdev_xmit(): Dropping skb.
[  962.749572] blackhole_netdev_xmit(): Dropping skb.