[DNSOP] Re: [v6ops] Re: Re: Moving DNS64 (RFC6147) to Internet Standard

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Saludos,
Jordi

@jordipalet


> El 10 abr 2026, a las 19:10, Michael Richardson <[e-mail]> escribió:
> 
> 
> DNS64 should be advanced to IS, but it can include (IESG or author) notes
> that *hosts* should aim to move to PREF64/etc. as written extensively in
> RFC8683.

Yes, this is what I suggested earlier. Also to use self-synthesis as much as possible.

> 
> It's very useful for networks to be able to deploy DNS64 for hosts that are
> either older (or are dual-stack capable from 2003, but operating IPv6-only),
> or which want to have *no* IPv4, or whose local infrastructure becomes v6-only.
> (They really only need a CLAT if they have v4-literals. I've run lots of
> v6-only hosts for ~15 years, long before CLAT)
> They do DNS requests to a local recursive nameserver (whether Do53 or
> DoX), on which DNSSEC and AAAA-synthesis occurs.
> 

I also mention some advantages in terms of connection optimization using DNS64 vs not.

> There are *many* reasons to have such older hosts, and to *not* do major upgrades.
> For instance, because they support applications deployed to systems that are
> not, or never replaced: embedded systems for buildings, aircraft, ...
> Remember, "host" can be a VM, or a even just a container.
> 
> {Many decades ago, when a WGA at BNR, I found a "devops" guy with what was
> already a super ancient HP9000 series 300 workstation on/under his desk.
> Because that was the build system for one generation of DMS-10.  His
> email/cocos wouldn't work anymore.  He got an NCD X-terminal that afternoon,
> and this critical build system got moved to the data center room.  We
> considered if we should/could do that without cutting the power to it, as it
> also hadn't rebooted in ~6 months.  It was fine}
> 
> So while DNS64 should be deprecated for hosts going forward, it needs to be
> available as network infrastructure (in a trade-agreement compatible RFP'able
> way) for some time.
> 
> --
> Michael Richardson <[e-mail]>   . o O ( IPv6 IøT consulting )
>           Sandelman Software Works Inc, Ottawa and Worldwide
> 
> **       My working hours and your working hours may be different.         **
> ** Please do not feel obligated to reply outside your normal working hours **
> 
> 
> 
> 
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