Error when adding IPv6 adress to whitelist/blacklist: error: Supported only ipv6 /64 networks

Issue

 The following error occurs when adding an IPv6 address with submask other than /64 to the whitelist/blacklist:

error: Supported only ipv6 /64 networks

Environment

• Imunify360
• Firewall

Solution

Use a /64 subnets.

Note: it is possible to use the IPv6 subnet calculator to calculate it.

If the prefix is 2a02:a58:9a34:abcd::/64, the address belongs to a /64 subnet.
If the prefix is 2a02:a58:9a34:abcd:abcd:abcd:abcd:abcd/128, it's a specific /128 address.

Cause

There is no way to add a smaller subnet here.