[    1.687001] ip (245) used greatest stack depth: 12352 bytes left
[    2.118859] ip (276) used greatest stack depth: 12320 bytes left
[   10.485228] ip (1171) used greatest stack depth: 12272 bytes left
[   16.143394] ip (2216) used greatest stack depth: 12160 bytes left
[  707.312321] blackhole_netdev_xmit(): Dropping skb.
[  707.312389] blackhole_netdev_xmit(): Dropping skb.
[  707.312420] blackhole_netdev_xmit(): Dropping skb.
[  707.312445] blackhole_netdev_xmit(): Dropping skb.
[  981.999711] blackhole_netdev_xmit(): Dropping skb.
[  981.999776] blackhole_netdev_xmit(): Dropping skb.
[  981.999810] blackhole_netdev_xmit(): Dropping skb.
[  981.999846] blackhole_netdev_xmit(): Dropping skb.
[ 1028.372156] blackhole_netdev_xmit(): Dropping skb.
[ 1028.372211] blackhole_netdev_xmit(): Dropping skb.
[ 1028.372246] blackhole_netdev_xmit(): Dropping skb.
[ 1028.372276] blackhole_netdev_xmit(): Dropping skb.
[ 1093.534798] blackhole_netdev_xmit(): Dropping skb.
[ 1093.534852] blackhole_netdev_xmit(): Dropping skb.
[ 1093.534894] blackhole_netdev_xmit(): Dropping skb.
[ 1093.534940] blackhole_netdev_xmit(): Dropping skb.
[ 1201.340935] blackhole_netdev_xmit(): Dropping skb.
[ 1201.340996] blackhole_netdev_xmit(): Dropping skb.
[ 1201.341033] blackhole_netdev_xmit(): Dropping skb.
[ 1201.341083] blackhole_netdev_xmit(): Dropping skb.