IPv6 Address Rules For Server Administrator
- The address should have eight groups of four hexadecimal digits, where each group is separated by a colon.
- The delimiter should be colon (:) only. The dot-decimal notation is not permitted.
- One or any number of consecutive groups of leading 0 value may be replaced with two colons (::): For example, 2001:db8:85a3:0000:0000:8a2e:370:7334 can be written as 2001:db8:85a3::8a2e:370:7334
- Network Prefixes are not permitted. For example, 2001:0db8:1234::/48 is not permitted.
- The address should not have more than one double colon (::).
- Unspecified (::) addresses are not supported.
- Link local address and loopback (::1) may not be permitted on some features of Server Administrator.