[  641.730914] ip (4065) used greatest stack depth: 12296 bytes left
[  689.026280] blackhole_netdev_xmit(): Dropping skb.
[  689.026331] blackhole_netdev_xmit(): Dropping skb.
[  689.026364] blackhole_netdev_xmit(): Dropping skb.
[  689.026401] blackhole_netdev_xmit(): Dropping skb.
[  706.009401] blackhole_netdev_xmit(): Dropping skb.
[  706.009452] blackhole_netdev_xmit(): Dropping skb.
[  706.009484] blackhole_netdev_xmit(): Dropping skb.
[  706.009522] blackhole_netdev_xmit(): Dropping skb.
[  714.172720] blackhole_netdev_xmit(): Dropping skb.
[  714.172774] blackhole_netdev_xmit(): Dropping skb.
[  714.172808] blackhole_netdev_xmit(): Dropping skb.
[  714.172845] blackhole_netdev_xmit(): Dropping skb.
[  740.888226] blackhole_netdev_xmit(): Dropping skb.
[  740.888277] blackhole_netdev_xmit(): Dropping skb.
[  740.888308] blackhole_netdev_xmit(): Dropping skb.
[  740.888335] blackhole_netdev_xmit(): Dropping skb.
[  853.168038] blackhole_netdev_xmit(): Dropping skb.
[  853.168097] blackhole_netdev_xmit(): Dropping skb.
[  853.168132] blackhole_netdev_xmit(): Dropping skb.
[  853.168169] blackhole_netdev_xmit(): Dropping skb.
[  869.467818] blackhole_netdev_xmit(): Dropping skb.
[  869.467888] blackhole_netdev_xmit(): Dropping skb.
[  869.467921] blackhole_netdev_xmit(): Dropping skb.
[  869.467952] blackhole_netdev_xmit(): Dropping skb.
[  877.024491] blackhole_netdev_xmit(): Dropping skb.
[  877.024563] blackhole_netdev_xmit(): Dropping skb.
[  877.024610] blackhole_netdev_xmit(): Dropping skb.
[  877.024657] blackhole_netdev_xmit(): Dropping skb.
[  915.084536] blackhole_netdev_xmit(): Dropping skb.
[  915.084588] blackhole_netdev_xmit(): Dropping skb.
[  915.084619] blackhole_netdev_xmit(): Dropping skb.
[  915.084645] blackhole_netdev_xmit(): Dropping skb.
[ 1118.254271] blackhole_netdev_xmit(): Dropping skb.
[ 1118.254351] blackhole_netdev_xmit(): Dropping skb.
[ 1118.254399] blackhole_netdev_xmit(): Dropping skb.
[ 1118.254455] blackhole_netdev_xmit(): Dropping skb.