[    1.913942] ip (249) used greatest stack depth: 12376 bytes left
[    2.451647] ip (281) used greatest stack depth: 12344 bytes left
[   12.501194] ip (1121) used greatest stack depth: 12288 bytes left
[   14.903909] mpls_gso: MPLS GSO support
[  780.213253] blackhole_netdev_xmit(): Dropping skb.
[  780.213326] blackhole_netdev_xmit(): Dropping skb.
[  780.213361] blackhole_netdev_xmit(): Dropping skb.
[  780.213394] blackhole_netdev_xmit(): Dropping skb.
[  861.681191] blackhole_netdev_xmit(): Dropping skb.
[  861.681249] blackhole_netdev_xmit(): Dropping skb.
[  861.681281] blackhole_netdev_xmit(): Dropping skb.
[  861.681318] blackhole_netdev_xmit(): Dropping skb.
[  911.062785] blackhole_netdev_xmit(): Dropping skb.
[  911.062860] blackhole_netdev_xmit(): Dropping skb.
[  911.062911] blackhole_netdev_xmit(): Dropping skb.
[  911.062967] blackhole_netdev_xmit(): Dropping skb.