DNS resolution

John Johnstone jjohnstone-freebsdquestions at tridentusa.com
Tue Mar 3 18:39:14 UTC 2020

On 2/28/20 1:45 AM, Doug Hardie wrote:

> I can't see what DNS servers the modem is using, but I suspect they are the "official" ones per the ISP.  When I use those directly, there is no rotating.  When I go to the modem with either windows or FreeBSD then I get rotation.  I don't see where else the rotation could be occurring.
> -- Doug

I'm not sure I correctly understand your problem but it sounds like you 
are expecting deterministic behavior that you will not be able to get 
due to the nature of how DNS works.  There are a lot of factors that 
come into play.

If you do a web search on DNS with multiple A records there is a lot of 
discussion about it.

Although this article is about round robin it also discusses the 
different issues with having multiple A records.


John J.

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