[    2.304424] ip (245) used greatest stack depth: 12352 bytes left
[    2.759302] ip (276) used greatest stack depth: 12320 bytes left
[    7.775650] ip (787) used greatest stack depth: 12272 bytes left
[  656.134884] blackhole_netdev_xmit(): Dropping skb.
[  656.134948] blackhole_netdev_xmit(): Dropping skb.
[  656.134979] blackhole_netdev_xmit(): Dropping skb.
[  656.135007] blackhole_netdev_xmit(): Dropping skb.
[  702.382612] blackhole_netdev_xmit(): Dropping skb.
[  702.382678] blackhole_netdev_xmit(): Dropping skb.
[  702.382718] blackhole_netdev_xmit(): Dropping skb.
[  702.382767] blackhole_netdev_xmit(): Dropping skb.
[  713.371913] blackhole_netdev_xmit(): Dropping skb.
[  713.371964] blackhole_netdev_xmit(): Dropping skb.
[  713.371992] blackhole_netdev_xmit(): Dropping skb.
[  713.372018] blackhole_netdev_xmit(): Dropping skb.
[  720.895937] blackhole_netdev_xmit(): Dropping skb.
[  720.896013] blackhole_netdev_xmit(): Dropping skb.
[  720.896068] blackhole_netdev_xmit(): Dropping skb.
[  720.896135] blackhole_netdev_xmit(): Dropping skb.
[  871.665665] blackhole_netdev_xmit(): Dropping skb.
[  871.665727] blackhole_netdev_xmit(): Dropping skb.
[  871.665767] blackhole_netdev_xmit(): Dropping skb.
[  871.665809] blackhole_netdev_xmit(): Dropping skb.
[  905.809604] blackhole_netdev_xmit(): Dropping skb.
[  905.809662] blackhole_netdev_xmit(): Dropping skb.
[  905.809695] blackhole_netdev_xmit(): Dropping skb.
[  905.809728] blackhole_netdev_xmit(): Dropping skb.
[  913.009325] blackhole_netdev_xmit(): Dropping skb.
[  913.009394] blackhole_netdev_xmit(): Dropping skb.
[  913.009450] blackhole_netdev_xmit(): Dropping skb.
[  913.009510] blackhole_netdev_xmit(): Dropping skb.
[  931.797202] blackhole_netdev_xmit(): Dropping skb.
[  931.797270] blackhole_netdev_xmit(): Dropping skb.
[  931.797306] blackhole_netdev_xmit(): Dropping skb.
[  931.797342] blackhole_netdev_xmit(): Dropping skb.