[    2.262299] ip (272) used greatest stack depth: 12344 bytes left
[  626.159325] ip (467) used greatest stack depth: 12328 bytes left
[  676.334507] blackhole_netdev_xmit(): Dropping skb.
[  676.334574] blackhole_netdev_xmit(): Dropping skb.
[  676.334630] blackhole_netdev_xmit(): Dropping skb.
[  676.334699] blackhole_netdev_xmit(): Dropping skb.
[  724.965909] blackhole_netdev_xmit(): Dropping skb.
[  724.965986] blackhole_netdev_xmit(): Dropping skb.
[  724.966037] blackhole_netdev_xmit(): Dropping skb.
[  724.966082] blackhole_netdev_xmit(): Dropping skb.
[  997.203030] blackhole_netdev_xmit(): Dropping skb.
[  997.203097] blackhole_netdev_xmit(): Dropping skb.
[  997.203128] blackhole_netdev_xmit(): Dropping skb.
[  997.203160] blackhole_netdev_xmit(): Dropping skb.
[ 1003.371079] blackhole_netdev_xmit(): Dropping skb.
[ 1003.371133] blackhole_netdev_xmit(): Dropping skb.
[ 1003.371168] blackhole_netdev_xmit(): Dropping skb.
[ 1003.371204] blackhole_netdev_xmit(): Dropping skb.
[ 1186.403235] blackhole_netdev_xmit(): Dropping skb.
[ 1186.403293] blackhole_netdev_xmit(): Dropping skb.
[ 1186.403329] blackhole_netdev_xmit(): Dropping skb.
[ 1186.403366] blackhole_netdev_xmit(): Dropping skb.