[    2.075402] ip (248) used greatest stack depth: 12376 bytes left
[    2.768044] ip (282) used greatest stack depth: 12360 bytes left
[    2.823785] ip (286) used greatest stack depth: 12344 bytes left
[   17.858077] mpls_gso: MPLS GSO support
[  696.944807] blackhole_netdev_xmit(): Dropping skb.
[  696.944967] blackhole_netdev_xmit(): Dropping skb.
[  696.945001] blackhole_netdev_xmit(): Dropping skb.
[  696.945041] blackhole_netdev_xmit(): Dropping skb.
[  704.781502] blackhole_netdev_xmit(): Dropping skb.
[  704.781558] blackhole_netdev_xmit(): Dropping skb.
[  704.781590] blackhole_netdev_xmit(): Dropping skb.
[  704.781626] blackhole_netdev_xmit(): Dropping skb.
[  956.986207] ip (22736) used greatest stack depth: 12192 bytes left
[ 1104.908650] blackhole_netdev_xmit(): Dropping skb.
[ 1104.908721] blackhole_netdev_xmit(): Dropping skb.
[ 1104.908755] blackhole_netdev_xmit(): Dropping skb.
[ 1104.908789] blackhole_netdev_xmit(): Dropping skb.