server:
interface: 0.0.0.0
access-control: 172.20.72.0/21 allow
access-control: 0.0.0.0/0 refuse
interface: ::
access-control: fd23:42:c3d2:500::/56 allow
access-control: ::172.20.72.0/117 allow
access-control: ::/0 deny