[    2.344542] ip (276) used greatest stack depth: 12320 bytes left
[   14.267566] ip (1363) used greatest stack depth: 12304 bytes left
[  684.851603] blackhole_netdev_xmit(): Dropping skb.
[  684.851684] blackhole_netdev_xmit(): Dropping skb.
[  684.851730] blackhole_netdev_xmit(): Dropping skb.
[  684.851785] blackhole_netdev_xmit(): Dropping skb.
[  798.859936] blackhole_netdev_xmit(): Dropping skb.
[  798.860028] blackhole_netdev_xmit(): Dropping skb.
[  798.860116] blackhole_netdev_xmit(): Dropping skb.
[  798.860179] blackhole_netdev_xmit(): Dropping skb.
[  970.527459] blackhole_netdev_xmit(): Dropping skb.
[  970.527530] blackhole_netdev_xmit(): Dropping skb.
[  970.527570] blackhole_netdev_xmit(): Dropping skb.
[  970.527612] blackhole_netdev_xmit(): Dropping skb.
[ 1099.858428] blackhole_netdev_xmit(): Dropping skb.
[ 1099.858485] blackhole_netdev_xmit(): Dropping skb.
[ 1099.858517] blackhole_netdev_xmit(): Dropping skb.
[ 1099.858558] blackhole_netdev_xmit(): Dropping skb.
[ 1181.721276] blackhole_netdev_xmit(): Dropping skb.
[ 1181.721338] blackhole_netdev_xmit(): Dropping skb.
[ 1181.721371] blackhole_netdev_xmit(): Dropping skb.
[ 1181.721406] blackhole_netdev_xmit(): Dropping skb.
[ 1184.072167] blackhole_netdev_xmit(): Dropping skb.
[ 1184.072249] blackhole_netdev_xmit(): Dropping skb.
[ 1184.072305] blackhole_netdev_xmit(): Dropping skb.
[ 1184.072350] blackhole_netdev_xmit(): Dropping skb.
[ 1215.152597] blackhole_netdev_xmit(): Dropping skb.
[ 1215.152656] blackhole_netdev_xmit(): Dropping skb.
[ 1215.152688] blackhole_netdev_xmit(): Dropping skb.
[ 1215.152728] blackhole_netdev_xmit(): Dropping skb.
[ 1236.363755] blackhole_netdev_xmit(): Dropping skb.
[ 1236.363806] blackhole_netdev_xmit(): Dropping skb.
[ 1236.363839] blackhole_netdev_xmit(): Dropping skb.
[ 1236.363880] blackhole_netdev_xmit(): Dropping skb.