[    1.920575] ip (242) used greatest stack depth: 12384 bytes left
[    2.542053] ip (277) used greatest stack depth: 12352 bytes left
[   14.371305] ip (1171) used greatest stack depth: 12200 bytes left
[  679.501077] blackhole_netdev_xmit(): Dropping skb.
[  679.501155] blackhole_netdev_xmit(): Dropping skb.
[  679.501229] blackhole_netdev_xmit(): Dropping skb.
[  679.501285] blackhole_netdev_xmit(): Dropping skb.
[  681.493177] blackhole_netdev_xmit(): Dropping skb.
[  681.493235] blackhole_netdev_xmit(): Dropping skb.
[  681.493282] blackhole_netdev_xmit(): Dropping skb.
[  681.493333] blackhole_netdev_xmit(): Dropping skb.
[  714.852829] blackhole_netdev_xmit(): Dropping skb.
[  714.852881] blackhole_netdev_xmit(): Dropping skb.
[  714.852911] blackhole_netdev_xmit(): Dropping skb.
[  714.852939] blackhole_netdev_xmit(): Dropping skb.
[  743.864746] blackhole_netdev_xmit(): Dropping skb.
[  743.864829] blackhole_netdev_xmit(): Dropping skb.
[  743.864878] blackhole_netdev_xmit(): Dropping skb.
[  743.864937] blackhole_netdev_xmit(): Dropping skb.
[  965.061528] blackhole_netdev_xmit(): Dropping skb.
[  965.061581] blackhole_netdev_xmit(): Dropping skb.
[  965.061612] blackhole_netdev_xmit(): Dropping skb.
[  965.061641] blackhole_netdev_xmit(): Dropping skb.
[ 1011.373759] blackhole_netdev_xmit(): Dropping skb.
[ 1011.373821] blackhole_netdev_xmit(): Dropping skb.
[ 1011.373851] blackhole_netdev_xmit(): Dropping skb.
[ 1011.373877] blackhole_netdev_xmit(): Dropping skb.
[ 1151.542463] blackhole_netdev_xmit(): Dropping skb.
[ 1151.542532] blackhole_netdev_xmit(): Dropping skb.
[ 1151.542569] blackhole_netdev_xmit(): Dropping skb.
[ 1151.542611] blackhole_netdev_xmit(): Dropping skb.