[    1.850060] ip (241) used greatest stack depth: 12352 bytes left
[    2.359645] ip (275) used greatest stack depth: 12320 bytes left
[  323.958860] ip (8514) used greatest stack depth: 12304 bytes left
[  833.318634] blackhole_netdev_xmit(): Dropping skb.
[  833.318700] blackhole_netdev_xmit(): Dropping skb.
[  833.318736] blackhole_netdev_xmit(): Dropping skb.
[  833.318771] blackhole_netdev_xmit(): Dropping skb.
[  919.889046] blackhole_netdev_xmit(): Dropping skb.
[  919.889118] blackhole_netdev_xmit(): Dropping skb.
[  919.889154] blackhole_netdev_xmit(): Dropping skb.
[  919.889187] blackhole_netdev_xmit(): Dropping skb.
[  959.350286] blackhole_netdev_xmit(): Dropping skb.
[  959.350345] blackhole_netdev_xmit(): Dropping skb.
[  959.350374] blackhole_netdev_xmit(): Dropping skb.
[  959.350406] blackhole_netdev_xmit(): Dropping skb.
[ 1073.219416] blackhole_netdev_xmit(): Dropping skb.
[ 1073.219477] blackhole_netdev_xmit(): Dropping skb.
[ 1073.219534] blackhole_netdev_xmit(): Dropping skb.
[ 1073.219576] blackhole_netdev_xmit(): Dropping skb.
[ 1118.921171] blackhole_netdev_xmit(): Dropping skb.
[ 1118.921222] blackhole_netdev_xmit(): Dropping skb.
[ 1118.921261] blackhole_netdev_xmit(): Dropping skb.
[ 1118.921296] blackhole_netdev_xmit(): Dropping skb.
[ 1137.502806] blackhole_netdev_xmit(): Dropping skb.
[ 1137.502861] blackhole_netdev_xmit(): Dropping skb.
[ 1137.502894] blackhole_netdev_xmit(): Dropping skb.
[ 1137.502921] blackhole_netdev_xmit(): Dropping skb.