[    1.951678] ip (248) used greatest stack depth: 12376 bytes left
[    2.498860] ip (282) used greatest stack depth: 12360 bytes left
[    2.681736] ip (297) used greatest stack depth: 12192 bytes left
[   14.571089] mpls_gso: MPLS GSO support
[  755.999148] blackhole_netdev_xmit(): Dropping skb.
[  755.999245] blackhole_netdev_xmit(): Dropping skb.
[  755.999285] blackhole_netdev_xmit(): Dropping skb.
[  755.999341] blackhole_netdev_xmit(): Dropping skb.
[ 1004.777227] blackhole_netdev_xmit(): Dropping skb.
[ 1004.777309] blackhole_netdev_xmit(): Dropping skb.
[ 1004.777359] blackhole_netdev_xmit(): Dropping skb.
[ 1004.777411] blackhole_netdev_xmit(): Dropping skb.