[    1.759088] ip (245) used greatest stack depth: 12352 bytes left
[    1.816379] ip (251) used greatest stack depth: 12304 bytes left
[   22.615600] ip (2628) used greatest stack depth: 12128 bytes left
[  691.732828] blackhole_netdev_xmit(): Dropping skb.
[  691.732903] blackhole_netdev_xmit(): Dropping skb.
[  691.732945] blackhole_netdev_xmit(): Dropping skb.
[  691.732989] blackhole_netdev_xmit(): Dropping skb.
[  693.369310] blackhole_netdev_xmit(): Dropping skb.
[  693.369382] blackhole_netdev_xmit(): Dropping skb.
[  693.369429] blackhole_netdev_xmit(): Dropping skb.
[  693.369475] blackhole_netdev_xmit(): Dropping skb.
[  701.399673] blackhole_netdev_xmit(): Dropping skb.
[  701.399731] blackhole_netdev_xmit(): Dropping skb.
[  701.399766] blackhole_netdev_xmit(): Dropping skb.
[  701.399803] blackhole_netdev_xmit(): Dropping skb.
[  767.121615] blackhole_netdev_xmit(): Dropping skb.
[  767.121696] blackhole_netdev_xmit(): Dropping skb.
[  767.121755] blackhole_netdev_xmit(): Dropping skb.
[  767.121823] blackhole_netdev_xmit(): Dropping skb.
[  871.569298] blackhole_netdev_xmit(): Dropping skb.
[  871.569366] blackhole_netdev_xmit(): Dropping skb.
[  871.569399] blackhole_netdev_xmit(): Dropping skb.
[  871.569435] blackhole_netdev_xmit(): Dropping skb.
[  912.996703] blackhole_netdev_xmit(): Dropping skb.
[  912.996773] blackhole_netdev_xmit(): Dropping skb.
[  912.996825] blackhole_netdev_xmit(): Dropping skb.
[  912.996869] blackhole_netdev_xmit(): Dropping skb.