• Home
  • Archive
  • Disclosure
    • Disclaimer
    • Comment Policy
    • Privacy Policy
  • Just Three
  • Contact
    • Who Am I ?
    • What does Ethereal Mind mean ?

EtherealMind

Software Defined & Intent Based Networking

You are here: Home / Blog / Network Dictionary – DNS64 and DNS46

Network Dictionary – DNS64 and DNS46

28th January 2011 By Greg Ferro Filed Under: Blog, Dictionary, IPv6

Terms describe the translation of an DNS A record for IPv4 into a AAAA record for IPv6 – DNS46.

And DNS64 is translation of the IPv6 AAAA record into the IPv4 A record.

So, DNS46 will be used for accessing websites on the Internet that are IPv6 only and where your internal systems IPv4 only. Conversely, DNS64 is used for hosts that are IPv6 only to access legacy IPv4 services.

About Greg Ferro

Human Infrastructure for Data Networks. 25 year survivor of Corporate IT in many verticals, tens of employers working on a wide range of networking solutions and products.

Host of the Packet Pushers Podcast on data networking at http://packetpushers.net- now the largest networking podcast on the Internet.

My personal blog at http://gregferro.com

Comments

  1. srg says

    28th January 2011 at 14:06 +0000

    “Conversely, DNS64 is likely to be used for hosts that are IPv_6_ only to access legacy IPv4 services”? 🙂

    • Greg Ferro says

      28th January 2011 at 14:46 +0000

      Thanks. And Fixed. Nice catch.

  2. John Payne says

    30th January 2011 at 04:24 +0000

    I think you have them the wrong way round in the first half of the post 🙂
    DNS64 translates A to AAAA so that IPv6 only hosts can reach IPv4 only resources through a NAT64 translator.
    DNS46 would convert AAAA to A.

    • Paul Roberts says

      4th March 2011 at 14:59 +0000

      I agree with John. Can we get some clarification before confusion sets in, I stumbled across this post when googling for the difference between DNS64 and DNS46.

Network Break Podcast

Network Break is round table podcast on news, views and industry events. Join Ethan, Drew and myself as we talk about what happened this week in networking. In the time it takes to have a coffee.

Packet Pushers Weekly

A podcast on Data Networking where we talk nerdy about technology, recent events, conduct interviews and more. We look at technology, the industry and our daily work lives every week.

Our motto: Too Much Networking Would Never Be Enough!

Find Me on Social Media

  • LinkedIn
  • RSS
  • Twitter
  • YouTube

Return to top of page

Copyright Greg Ferro 2008-2019 - Thanks for reading my site, it's been good to have you here.

Opinions, Views and Ideas expressed here are my own and do not represent any employer, vendor or sponsor.Full disclosure