Route10 VLAN - DNS, How are they handled?

If you list multiple DNS IPs in a VLAN or WAN, how is it handled?

  • Primary and secondary as listed in order?
  • Load balanced?
  • Parallel?
  • Fastest IP?

I’m using adguard for DNS filtering internally and want to list my DNS server. However, I also want to list and external DNS server just in case my internal fails. Same question for WAN configured DNS.

For example VLAN configuration: 10.12.10.20, 1.1.1.1
For example WAN configuration: 1.1.1.1,8.8.8.8