[   38.227377][  T312] ip (312) used greatest stack depth: 23928 bytes left
[  217.222203][ T1177] ip (1177) used greatest stack depth: 23744 bytes left
[ 1362.089662][ T9993] blackhole_netdev_xmit(): Dropping skb.
[ 1362.090213][ T9993] blackhole_netdev_xmit(): Dropping skb.
[ 1362.090440][ T9993] blackhole_netdev_xmit(): Dropping skb.
[ 1362.090768][ T9993] blackhole_netdev_xmit(): Dropping skb.