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Re:URLs: It's Complicated by jackewiehose on Wednesday June 23, 2021 @01:16PM (#27607077)
> It seems like the colon is too ambiguous (is used as a protocol delimiter, delimiter for user/pass, delimiter for port).

and because that was still too boring they came up with ipv6

Re:URLs: It's Complicated by mananaysiempre on Wednesday June 23, 2021 @02:33PM (#27608245)
IIUC the IPv6 weirdness here is simply due to very unfortunate timing: IPv6 was being finalized at a time (first half of the 90s) when the Web (and with it URLs) was already nearly frozen but still not obviously important.
Re:URLs: It's Complicated by chungy on Wednesday June 23, 2021 @10:34PM (#27613212)
The colons also make IPv6 addresses unambiguous to IPv4 notation.