[ipv6-wg] what is v6-only?

On 4/May/16 19:51, Bajpai, Vaibhav wrote:

> Hello,
>
> What does v6-only mean?
>
> a) A client only has v6 address and can only route to v6 destinations
>
> b) A client only has v6 address but can route to dual-stack
> destinations using a network translator (such as NAT64)
>
> IIRC, IETF SSIDs are named: 'v6 only + nat64’.
>
> Personally when someone says v6-only I presume a), but lately I have
> seen people say v6-only although they mean b).
>
> PS: Sorry for a silly question

It's not a silly question.

In 2050 (hopefully sooner), IPv6-only will be a).

In 2016, and for the foreseeable future, IPv6-only means (or will mean) b).

IPv6-only customers will still need connectivity to IPv4-only Internet
resources for as long as those IPv4-only resources remain in substantial
order. An ISP ceases to be one if they cannot provide this connectivity.

Mark.

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