[    2.623600] ip (278) used greatest stack depth: 12344 bytes left
[    2.828992] ip (293) used greatest stack depth: 12200 bytes left
[  728.627391] blackhole_netdev_xmit(): Dropping skb.
[  728.627454] blackhole_netdev_xmit(): Dropping skb.
[  728.627486] blackhole_netdev_xmit(): Dropping skb.
[  728.627512] blackhole_netdev_xmit(): Dropping skb.
[  830.975030] blackhole_netdev_xmit(): Dropping skb.
[  830.975082] blackhole_netdev_xmit(): Dropping skb.
[  830.975115] blackhole_netdev_xmit(): Dropping skb.
[  830.975148] blackhole_netdev_xmit(): Dropping skb.
[  834.345332] blackhole_netdev_xmit(): Dropping skb.
[  834.345381] blackhole_netdev_xmit(): Dropping skb.
[  834.345413] blackhole_netdev_xmit(): Dropping skb.
[  834.345442] blackhole_netdev_xmit(): Dropping skb.
[ 1114.271303] blackhole_netdev_xmit(): Dropping skb.
[ 1114.271383] blackhole_netdev_xmit(): Dropping skb.
[ 1114.271434] blackhole_netdev_xmit(): Dropping skb.
[ 1114.271478] blackhole_netdev_xmit(): Dropping skb.
[ 1146.274439] blackhole_netdev_xmit(): Dropping skb.
[ 1146.274505] blackhole_netdev_xmit(): Dropping skb.
[ 1146.274551] blackhole_netdev_xmit(): Dropping skb.
[ 1146.274600] blackhole_netdev_xmit(): Dropping skb.
[ 1181.962571] blackhole_netdev_xmit(): Dropping skb.
[ 1181.962635] blackhole_netdev_xmit(): Dropping skb.
[ 1181.962681] blackhole_netdev_xmit(): Dropping skb.
[ 1181.962720] blackhole_netdev_xmit(): Dropping skb.
[ 1192.793895] blackhole_netdev_xmit(): Dropping skb.
[ 1192.793960] blackhole_netdev_xmit(): Dropping skb.
[ 1192.794011] blackhole_netdev_xmit(): Dropping skb.
[ 1192.794068] blackhole_netdev_xmit(): Dropping skb.
[ 1235.834792] blackhole_netdev_xmit(): Dropping skb.
[ 1235.834856] blackhole_netdev_xmit(): Dropping skb.
[ 1235.834893] blackhole_netdev_xmit(): Dropping skb.
[ 1235.834933] blackhole_netdev_xmit(): Dropping skb.