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Matt Varner5,373 Points
IPv4, IPv6 and Domain Name Limits
Just off the cuff here, I am wondering if the domain name rules Jason Seifer is highlighting in this informational survey of the subject are separated, contextually, from the network protocol(s) that eventually is/are utilized in the transfer of the packet information.
That is...if and when devices fully use the IPv6 protocol (as opposed to co-existing with the older IPv4), will that also mean an eventual change in the current limits of some domain name rules Jason mentions in the video:
- 253 character (ASCII-only) limit for a domain name
- 127 domain levels
- Each level having a limit of 63 characters
- LDH (letters, digits, hyphens)
Domain naming restrictions and IPv4/IPv6 stuff are not directly related. IPv6 is already in pretty widespread use, but even in an IPv6-only world, DNS as we know will still work the same. That's not to say though that domain naming rules never change. For example,
253 character (ASCII-only) limit for a domain name
This isn't strictly true anymore. Here's a Wikipedia article about internationalized domain names that support unicode characters.