2.4GHz through Wireguard, 5GHz direct

[lleachii]

• Make new network (seems like you've done that and named it wg)
• Make route for default via mullvad on another table (e.g. Table No. 2):

# in /etc/config/network
config route
	option target '0.0.0.0'
	option netmask '0.0.0.0'
	option table '2'
	option interface 'mullvad'

• Make an routing rule for the WiFi network wg to use interface mullvad:

# in /etc/config/network
config rule
	option in 'wg'
	option dest '0.0.0.0/0'
	option priority '10'
	option lookup '2'

• Done!