Replicating DD-WRT DNS lookup behavior

Started by Frotz, Today at 07:56:43 PM

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I'm trying to migrate a DD-WRT setup to OPNsense 25.7 and there's one final hitch -- DNS lookups.  Under the DD-WRT setup, a client on the internal network would get the correct result when looking up each of these:


The host-internal hosts are assigned IPs through DHCP.  Some of them are handed static addresses.  The host-external hosts are VMs at hosting services.  When I try to get OPNsense to handle this, some work and some don't.  Exactly which does and doesn't changes depending on what parameters I tweak or services I use.  Frustrated with this, I tried using ChatGPT and had the same problem.  Note: in "System: Settings: General", the domain is set to "mydomain.com".  Some of the rabbit holes I went down with ChatGPT suggested that KeaDHCP would do what I want, but that functionality is not exposed in the OPNsense user interface.  Meanwhile I keep getting suggestions of how to trick OPNsense into doing what I want, but these keep going in circles.  How do I get this working?