[   12.631186] ip (946) used greatest stack depth: 12072 bytes left
[  756.366854] blackhole_netdev_xmit(): Dropping skb.
[  756.366930] blackhole_netdev_xmit(): Dropping skb.
[  756.366970] blackhole_netdev_xmit(): Dropping skb.
[  756.367010] blackhole_netdev_xmit(): Dropping skb.
[  793.849622] blackhole_netdev_xmit(): Dropping skb.
[  793.849688] blackhole_netdev_xmit(): Dropping skb.
[  793.849728] blackhole_netdev_xmit(): Dropping skb.
[  793.849769] blackhole_netdev_xmit(): Dropping skb.
[  999.551415] blackhole_netdev_xmit(): Dropping skb.
[  999.551477] blackhole_netdev_xmit(): Dropping skb.
[  999.551508] blackhole_netdev_xmit(): Dropping skb.
[  999.551535] blackhole_netdev_xmit(): Dropping skb.
[ 1252.449782] blackhole_netdev_xmit(): Dropping skb.
[ 1252.449857] blackhole_netdev_xmit(): Dropping skb.
[ 1252.449893] blackhole_netdev_xmit(): Dropping skb.
[ 1252.449932] blackhole_netdev_xmit(): Dropping skb.