[    1.697422] ip (240) used greatest stack depth: 12544 bytes left
[    2.161536] ip (274) used greatest stack depth: 12320 bytes left
[    5.091632] ip (452) used greatest stack depth: 12160 bytes left
[ 1077.474435] blackhole_netdev_xmit(): Dropping skb.
[ 1077.474495] blackhole_netdev_xmit(): Dropping skb.
[ 1077.474529] blackhole_netdev_xmit(): Dropping skb.
[ 1077.474563] blackhole_netdev_xmit(): Dropping skb.
[ 1088.382534] blackhole_netdev_xmit(): Dropping skb.
[ 1088.382588] blackhole_netdev_xmit(): Dropping skb.
[ 1088.382627] blackhole_netdev_xmit(): Dropping skb.
[ 1088.382658] blackhole_netdev_xmit(): Dropping skb.
[ 1089.715353] blackhole_netdev_xmit(): Dropping skb.
[ 1089.715405] blackhole_netdev_xmit(): Dropping skb.
[ 1089.715444] blackhole_netdev_xmit(): Dropping skb.
[ 1089.715475] blackhole_netdev_xmit(): Dropping skb.
[ 1118.643757] blackhole_netdev_xmit(): Dropping skb.
[ 1118.643814] blackhole_netdev_xmit(): Dropping skb.
[ 1118.643848] blackhole_netdev_xmit(): Dropping skb.
[ 1118.643891] blackhole_netdev_xmit(): Dropping skb.
[ 1121.364946] blackhole_netdev_xmit(): Dropping skb.
[ 1121.364999] blackhole_netdev_xmit(): Dropping skb.
[ 1121.365033] blackhole_netdev_xmit(): Dropping skb.
[ 1121.365073] blackhole_netdev_xmit(): Dropping skb.
[ 1174.795523] blackhole_netdev_xmit(): Dropping skb.
[ 1174.795580] blackhole_netdev_xmit(): Dropping skb.
[ 1174.795626] blackhole_netdev_xmit(): Dropping skb.
[ 1174.795674] blackhole_netdev_xmit(): Dropping skb.
[ 1204.654933] blackhole_netdev_xmit(): Dropping skb.
[ 1204.654986] blackhole_netdev_xmit(): Dropping skb.
[ 1204.655024] blackhole_netdev_xmit(): Dropping skb.
[ 1204.655055] blackhole_netdev_xmit(): Dropping skb.