[    1.948178] ip (244) used greatest stack depth: 12352 bytes left
[    2.560915] ip (275) used greatest stack depth: 12320 bytes left
[  655.628536] blackhole_netdev_xmit(): Dropping skb.
[  655.628644] blackhole_netdev_xmit(): Dropping skb.
[  655.628696] blackhole_netdev_xmit(): Dropping skb.
[  655.628747] blackhole_netdev_xmit(): Dropping skb.
[  802.832451] blackhole_netdev_xmit(): Dropping skb.
[  802.832509] blackhole_netdev_xmit(): Dropping skb.
[  802.832543] blackhole_netdev_xmit(): Dropping skb.
[  802.832591] blackhole_netdev_xmit(): Dropping skb.
[  944.151690] blackhole_netdev_xmit(): Dropping skb.
[  944.151774] blackhole_netdev_xmit(): Dropping skb.
[  944.151811] blackhole_netdev_xmit(): Dropping skb.
[  944.151850] blackhole_netdev_xmit(): Dropping skb.
[ 1184.427981] blackhole_netdev_xmit(): Dropping skb.
[ 1184.428042] blackhole_netdev_xmit(): Dropping skb.
[ 1184.428075] blackhole_netdev_xmit(): Dropping skb.
[ 1184.428111] blackhole_netdev_xmit(): Dropping skb.
[ 1242.903732] blackhole_netdev_xmit(): Dropping skb.
[ 1242.903813] blackhole_netdev_xmit(): Dropping skb.
[ 1242.903865] blackhole_netdev_xmit(): Dropping skb.
[ 1242.903914] blackhole_netdev_xmit(): Dropping skb.