[    1.762903] ip (246) used greatest stack depth: 12352 bytes left
[    1.790776] ip (249) used greatest stack depth: 12304 bytes left
[  323.507779] ip (1358) used greatest stack depth: 12160 bytes left
[  754.560229] blackhole_netdev_xmit(): Dropping skb.
[  754.560293] blackhole_netdev_xmit(): Dropping skb.
[  754.560337] blackhole_netdev_xmit(): Dropping skb.
[  754.560370] blackhole_netdev_xmit(): Dropping skb.
[  814.628976] blackhole_netdev_xmit(): Dropping skb.
[  814.629038] blackhole_netdev_xmit(): Dropping skb.
[  814.629070] blackhole_netdev_xmit(): Dropping skb.
[  814.629102] blackhole_netdev_xmit(): Dropping skb.
[  815.526102] blackhole_netdev_xmit(): Dropping skb.
[  815.526162] blackhole_netdev_xmit(): Dropping skb.
[  815.526191] blackhole_netdev_xmit(): Dropping skb.
[  815.526227] blackhole_netdev_xmit(): Dropping skb.
[  819.902147] blackhole_netdev_xmit(): Dropping skb.
[  819.902201] blackhole_netdev_xmit(): Dropping skb.
[  819.902241] blackhole_netdev_xmit(): Dropping skb.
[  819.902276] blackhole_netdev_xmit(): Dropping skb.
[  860.501836] blackhole_netdev_xmit(): Dropping skb.
[  860.501885] blackhole_netdev_xmit(): Dropping skb.
[  860.501915] blackhole_netdev_xmit(): Dropping skb.
[  860.501941] blackhole_netdev_xmit(): Dropping skb.