Re: DNS on minimal new installation
On Fri, 25 Oct 2024 08:03:43 +0100
Chris Green <cl@isbd.net> wrote:
> Yes, OP here again, that's why I said in my original post "(I know
> they're not quite the same thing, but the result works OK)"
> I think (on Ubuntu it did anyway) that systemd-resolved.service
> provides a DNS caching service. The trouble is that it does it wrong
> (in many people's opinion), if the 'first' DNS server fails to give an
> answer it tries the 'second' (correct enough) but it then sticks to
> using the 'second'. If your local LAN DNS fails (even momentarily)
> then it never gets used again and you lose LAN DNS. This has been
> argued over endlessly with the systemd developers.
>
I don't know if it's significant, but that's how Microsoft domain DNS
works, meaning that unless multiple DNS servers replicate. a short loss
of connection cuts the clients off from Active Directory, rather more
serious.
--
Joe
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