Support for IPv6 addresses about wait-for-it HOT 3 OPEN

Hey @joel0
You can use the Wait4X, it supports IPV6:

wait4x tcp '[::1]:3306'

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Sadly this script is outdated. I'm looking into updating it for IPv6 using RFCs. No guarantees tho, as I have limited mental capacity ATM.

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A very easy fix idea: splitting by the last colon matched, not the first. That should do the trick.
Text representation can be found here: https://datatracker.ietf.org/doc/html/rfc2373#section-2.2
Maybe it's better to add a regex checking for Domain/IPv6/IPv4. I'll also see about the connections that the script makes, to make sure it follows happy eyeballs for domains: https://datatracker.ietf.org/doc/html/rfc8305
netcat to my knowledge is very sticky to one protocol unless specified differently. Maybe I'd check both IPv6 and IPv4 if a domain resolves to both.

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