[    1.897614] ip (249) used greatest stack depth: 12376 bytes left
[    2.446353] ip (280) used greatest stack depth: 12360 bytes left
[    2.490665] ip (285) used greatest stack depth: 12344 bytes left
[   14.867110] mpls_gso: MPLS GSO support
[  908.034335] blackhole_netdev_xmit(): Dropping skb.
[  908.034400] blackhole_netdev_xmit(): Dropping skb.
[  908.034430] blackhole_netdev_xmit(): Dropping skb.
[  908.034460] blackhole_netdev_xmit(): Dropping skb.
[  965.918126] blackhole_netdev_xmit(): Dropping skb.
[  965.918178] blackhole_netdev_xmit(): Dropping skb.
[  965.918218] blackhole_netdev_xmit(): Dropping skb.
[  965.918251] blackhole_netdev_xmit(): Dropping skb.