OPNsense Forum

English Forums => General Discussion => Topic started by: pinpoint on January 24, 2026, 04:31:17 PM

Title: WAN failover DNS problem
Post by: pinpoint on January 24, 2026, 04:31:17 PM
WAN1 is my main fiber and WAN2 is netgeaer MR5200 mobile router (in passover mode)
I have also setup Unbound DNS, query forwarding is disabled, and dns server in system-settings-general are empty. Gateway switching is checked.

DNS works over WAN1, but when I disconnect WAN1 and WAN2 takes over, i can access external webpages for about 10 sec, then all new pages times out. I am able to ping external ip adresses as well as ip tv is still streaming seamlessly.

I have now spent several hours for many weeks trying to fix this but nothing seems to help. I suspect that the problem lies with Unbound DNS. When I manually change dns on my laptop to 8.8.8.8, DNS finally works but I don`t want to change to 8.8.8.8 on all may clients. I want to use my firewall DNS 192.168.50.1.

I also use Dnsmasq DNS & DHCP where DNS and gateway are directed to CARP IP on my firewall 192.168.50.1.

I setup failover by using the guide on https://docs.opnsense.org/manual/how-tos/multiwan.html as well as troubleshooting using chatgpt. I have read multiple posts here where people seem to have simlar problem.
OPNsense 25.7.11_2-amd64.

Anyone know what might be the problem?