How to create rule for router itself mwan3 / does mwan restart wan interfaces when they appear to be offline?

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello,

I cannot seem to set mwan rule for router itself. I tried to changed gateway metric on wan devices vice versa with no success.

Also, if I set this mwan3 rule, it doesn't work - still goes via "wan" interface, not "wanb". I'd like to use "wanb" connection for DNS requests.

config rule 'router'
	option family 'ipv4'
	option proto 'all'
	option sticky '0'
	option use_policy 'wanb_wan'
	option src_ip '10.0.0.1'

My 2nd question is whether mwan3 restarts wan interfaces .e.g. when they still have IP (that's not valid anymore) and are kind of offline from internet.

Thanks.