Subj : A true rescan of this echo
To   : Björn Felten
From : Richard Menedetter
Date : Thu Apr 20 2017 20:13:36

Hi Björn!

20 Apr 2017 20:06, from Björn Felten -> Richard Menedetter:

 RM>> So if you do not support IPv6 do not advertise an AAAA record.
 BF>    I can't find any setting in my AAAA record that limits the
 BF> connectivity to certain IPv4 ports. I *do* support IPv6 on the ports
 BF> that are opened in my router, is that not good enough?

The AAAA record indicates working IPv6.
You cannot limit its scope.

So you can use different subdomains to signal different capabilities.

Eg have ipv4.fqdn.com for v4 and ipv6.fqdn.com for ipv6.
Or wwww.fqdn.com for IPv4 and fqdn.com for both.

Whatever floats your boat.

If you KNOW that the service you are offering does not support IPv6, make sure that the domain you tell people does not have an AAAA record.

CU, Ricsi

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