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23.7 Legacy Series / Re: DNS Priority, IPv4, IPv6
« on: November 18, 2023, 04:07:15 pm »In dual-stack networks, there's not a lot the router / firewall can do to enforce one protocol over the other. That's up to the clients. Windows e.g. is known to prefer DNS servers assigned via DHCP over those assigned via RAs. You could enable the DHCPv6 server in stateless mode to work around this specific issue.Thanks Maurice, especially for 'Windows e.g. is known to prefer DNS servers assigned via DHCP over those assigned via RAs.' That's what I suspected (as per last sentence of my previous post).
Cheers
Maurice
I'm intrigued about what my old Draytek was doing. I know I didn't have DHCPv6 enabled but was pretty sure that Windows reported DNS server addresses with IPv6 at the top of the list. Perhaps I'm mistaken. I'll check in a week or two when I take OPNsense offline to add an extra NIC.