DNS Resolver and Gateway Groups

[ca1f]

Hi y'all,

I have 2 WAN interfaces, one is my DSL modem as the main connection to the internet and a 4G modem in case of the DSL connection dying which happens every now and then.

Both WAN interfaces are configured in a Gateway group according to the documentation here: https://docs.netgate.com/pfsense/en/latest/multiwan/load-balance-and-failover.html with the preferance to use the DSL modem over the 4G modem. This also seems to mostly work, there is no traffic directed at the internet going over the 4G modem.

Now, when I activate the 4G interface in the DNS Resolver configuration for outbound interfaces, it also sends DNS queries over the LTE modem even though the DSL modem still has an active internet connection. Is there a way to configure the DNS Resolver so that it only uses the 4G interface if the DSL internet connection is unavailable?

[mer]

@ca1f
I've not mucked with configuration similar to yours, but can you set the Gateway group as the outbound interface in the DNS Resolver?
Logically doing that "should work". I don't know if you can, just off the top of my head.

[ca1f]

Thanks for looking into my problem.

@mer said in DNS Resolver and Gateway Groups:

Can you set the Gateway group as the outbound interface in the DNS Resolver?
Logically doing that "should work". I don't know if you can, just off the top of my head.

That would also make sense to me as well but the configured gateway group is not appearing as a network interface neither in the ifconfig output nor as an option in the outbound interface selection box for the DNS Resolver configuration tab.