Ipv6 regex is missing

[KLuuKer]

there is no regex matching for ipv6
and after some searching maybe it's better to have multiple regex lines per "format"

this post seems like it would work? (or atleast to get a idea)
https://stackoverflow.com/a/21943960

if (
    /* IPv6 expanded */
    REGEX_LIKE(v, '\A[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7}\z', 'i')
    /* IPv6 shorthand */
    OR (NOT REGEX_LIKE(v, '\A(.*?[a-f0-9](:|\z)){8}', 'i')
        AND REGEX_LIKE(v, '\A([a-f0-9]{1,4}(:[a-f0-9]{1,4}){0,6})?::([a-f0-9]{1,4}(:[a-f0-9]{1,4}){0,6})?\z', 'i'))
    /* IPv6 dotted-quad notation, expanded */
    OR REGEX_LIKE(v, '\A[a-f0-9]{1,4}(:[a-f0-9]{1,4}){5}:(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}\z', 'i')
    /* IPv6 dotted-quad notation, shorthand */
    OR (NOT REGEX_LIKE(v, '\A(.*?[a-f0-9]:){6}', 'i')
        AND REGEX_LIKE(v, '\A([a-f0-9]{1,4}(:[a-f0-9]{1,4}){0,4})?::([a-f0-9]{1,4}:){0,5}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}\z', 'i'))
   ) then

[gurua]

Thank you for the report, we will get this added.