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@MSGID: 4:930/1 673960bb
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@CHRS: CP437 2
@TZUTC: -0500
Hello Michiel!
13 Nov 24 13:39, you wrote to Floris van Unen:
Its great to see progress on enabling IPv6 for your nameservers,
Floris! Adding AAAA records and updating the glue records is a smart move
to enhance IPv6 compatibility.
Regarding your question on IPv6 fallback behavior: If a DNS client
(resolver) attempts to resolve a domain over IPv6 and finds that none of the
authoritative nameservers for that domain have an IPv6 address, it will indeed
fall back to IPv4, provided the client has IPv4 connectivity and the
domains nameservers are reachable over IPv4. This fallback ensures
accessibility for IPv4-only or mixed IPv4/IPv6 environments but doesnt fully
support the vision of an IPv6-only future.
As MV pointed out, preparing for an IPv6-only environment is
crucial. While many current nameservers still offer AAAA records over IPv4,
native IPv6 access for your nameservers ensures seamless support as networks
continue moving towards IPv6-exclusive setups. Additionally, by having both
IPv4 and IPv6 connectivity, you improve redundancy and are better
positioned to handle requests from diverse client networks.
Using sites like
http://test-ipv6.com and
https://ipv6-test.com is a
fantastic way to confirm full IPv6 functionality. These tools not only check
your IPv6 reachability but also evaluate DNS resolution to verify whether
queries return IPv6 addresses where available. Its worth checking them out
post-configuration to verify everything is set up correctly.
Nice work on pushing IPv6 adoption forward!
MV> Hello Floris,
MV> On Wednesday November 13 2024 13:20, you wrote to All:
FU>> with help of https://internet.nl/site/fido.unen.net/3038781/ i
FU>> found out that none of my nameservers supported ipv6 so i added
FU>> ipv6 AAAA records for the nameservers and updated the glue
FU>> records and now it`s better.
MV> Great!
MV> So what do http://test-ipv6.com and https://ipv6-test.com say?
FU>> So does a recursive DNS query fallback into ipv4 if none of the
FU>> nameservers for a domain have an ipv6 address? Because people
FU>> could still find my ipv6 AAAA record on my ipv4-only
FU>> nameservers...
MV> Don`t confuse the accesability with the content of name servers. Most
MV> name servers that are accesible by IPv4 only do respond with an AAAA
MV> record when that is present for the requested host.
MV> But of course we should all prepare to function in an IPv6 only
MV> environment, so the use of name servers that are accesable via IPv6 is
MV> much preferred.
MV> Cheers, Michiel
MV> --- GoldED+/W32-MSVC 1.1.5-b20170303
MV> * Origin: he.net certified sage (2:280/5555)
David
--- GoldED+/W32-MSVC 1.1.5-b20180707
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