[    1.647013] ip (242) used greatest stack depth: 12352 bytes left
[    2.140157] ip (276) used greatest stack depth: 12320 bytes left
[  863.971294] blackhole_netdev_xmit(): Dropping skb.
[  863.971363] blackhole_netdev_xmit(): Dropping skb.
[  863.971398] blackhole_netdev_xmit(): Dropping skb.
[  863.971440] blackhole_netdev_xmit(): Dropping skb.
[ 1085.262045] blackhole_netdev_xmit(): Dropping skb.
[ 1085.262116] blackhole_netdev_xmit(): Dropping skb.
[ 1085.262153] blackhole_netdev_xmit(): Dropping skb.
[ 1085.262186] blackhole_netdev_xmit(): Dropping skb.
[ 1115.093302] blackhole_netdev_xmit(): Dropping skb.
[ 1115.093367] blackhole_netdev_xmit(): Dropping skb.
[ 1115.093412] blackhole_netdev_xmit(): Dropping skb.
[ 1115.093458] blackhole_netdev_xmit(): Dropping skb.
[ 1174.225295] blackhole_netdev_xmit(): Dropping skb.
[ 1174.225346] blackhole_netdev_xmit(): Dropping skb.
[ 1174.225375] blackhole_netdev_xmit(): Dropping skb.
[ 1174.225410] blackhole_netdev_xmit(): Dropping skb.
[ 1212.843839] blackhole_netdev_xmit(): Dropping skb.
[ 1212.843903] blackhole_netdev_xmit(): Dropping skb.
[ 1212.843941] blackhole_netdev_xmit(): Dropping skb.
[ 1212.843980] blackhole_netdev_xmit(): Dropping skb.