Format Registry
ipv6-cidr - An IPv6 address in CIDR-style notation
JSON Data Type: string.
The ipv6-cidr format represents an IPv6 address in CIDR notation, with the syntax described in RFC4291.
The address MUST be a valid ipv6 address, and the prefix length MUST be a decimal integer from 0 to 128, inclusive. A plain IPv6 address without a prefix length is not accepted.
Examples of valid values include 2001:db8::/32 and ::1/128.