On Thu, Sep 25, 2014 at 4:47 PM, Mark Andrews <[email protected]> wrote: > > In message <CAAObRXKo5GbesOA-wQ0K= > [email protected]>, Davey Song writes: > > Hi everyone, I‘m recently doing a little survey on the penetration of > IPv6 > > in DNS system and it's latent problems. > > > > I find that top websites like Google, Wikipedia,Yahoo already support > IPv6 > > access, but its name servers are still IPv4-only. I'm wondering why? is > > there any operation consideration or risk in their IPv6 deployment? > > Registrars making it difficult to add AAAA addresses. Inertia. > CDN's not supporting IPv6 nameservers. > > Yes. they need more incentive to update their system.
Actually, I firstly pay attention to the dual-stack in DNS is the setting to keep the independence of DNS transport and DNS records(RFC4472). I think this setting in a way provide a reason for Registrar/Registry/CDN not doing so. > Best Regards, > > Davey > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: [email protected] >
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