Canon VB-S30D Operating Manual page 65

Note
If the same address is duplicated, the policy for the address that
appears highest on the list will be applied.
IPv6 Host Access Restrictions
(1) [Apply Host Access Restrictions]
Set IPv6 host access restrictions to [Disable] or
[Enable].
(2) [Default Policy]
If IPv6 host access restrictions are applied, select
[Authorize Access] or [Prohibit Access] for the default
policy.
(3) [Prefix / Prefix Length]
Create a list of permitted hosts and restricted hosts
and set IPv6 address access for each host to [Yes] or
[No].
You can specify the prefix length and set access
restriction by network or host.
If access is prohibited, access to all ports is
restricted.
[Access Control] Setting User Access Privileges
3
65