Quote from: prutz0rIs there anything missing from that tutorial?
Hi prutz0r, I wrote the PrivacyGear guide you linked. Thanks for using it, and your question was a fair one: the guide assumed a brand-new network.
I've added a section for exactly your situation (keeping your existing 192.168.1.0/24 by moving the LAN assignment onto the VLAN instead of creating a second interface, plus what happens to static leases). While checking it against the OPNsense docs I also fixed the DHCP step (Dnsmasq instead of the end-of-life ISC server) and the firewall rule order.
English version, no Google Translate needed:
https://privacygear.nl/en/guides/opnsense-vlan-guide/
Hope the mesh setup works out.
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