[  279.912352] ip (7664) used greatest stack depth: 12160 bytes left
[ 1243.661906] blackhole_netdev_xmit(): Dropping skb.
[ 1243.661978] blackhole_netdev_xmit(): Dropping skb.
[ 1243.662017] blackhole_netdev_xmit(): Dropping skb.
[ 1243.662054] blackhole_netdev_xmit(): Dropping skb.
[ 1359.435568] blackhole_netdev_xmit(): Dropping skb.
[ 1359.435634] blackhole_netdev_xmit(): Dropping skb.
[ 1359.435677] blackhole_netdev_xmit(): Dropping skb.
[ 1359.435715] blackhole_netdev_xmit(): Dropping skb.
[ 1377.954653] blackhole_netdev_xmit(): Dropping skb.
[ 1377.954730] blackhole_netdev_xmit(): Dropping skb.
[ 1377.954769] blackhole_netdev_xmit(): Dropping skb.
[ 1377.954807] blackhole_netdev_xmit(): Dropping skb.