I just check for updates on on of my routers and the version it is currently run is 25.7.7_4 (amd64) at Sun Nov 9 17:17:29 UTC 2025.
I had everything working correctly, then this past weekend Fri Oct 31 actually I had to restore defaults. I believe an update was done after I initially got it configured, but before the restoring of defaults.
I have three local LANS - LAN1, LAN2, and LAN3.
The issue I am having is after a restart ISC DHCPv4 Server is running. That would be fine, however only LAN2 and LAN3 can get IP Address' form DHCP, LAN1 cannot. However, if I stop ISC DHCPv4 Server and start Dnsmasq DNS/DHCP. Then all three networks can get IP Address' from DHCP.
How can I either get all three networks to get IP Address' from ISC DHCPv4?
Or make Dnsmasq DNS/DHCP the default DHCP server?
Is there any benefit from using one over the other?
ISC DHCP is deprecated and if you disable it on every interface, it should never start.
The official OpnSense replacement ist DNSmasq, see: https://docs.opnsense.org/manual/dnsmasq.html
Other than than, you can also use Kea DHCP instead.