Suppose you are using DDNS to support your VOIP phone system. You have two ISPs and dual WAN.
What happens if one of the ISPs goes down? Is the DDNS linked to a specific interface, exclusively, with no way for Mikrotik to update it (other than scripting, I suppose) automatically in the event one WAN goes down? Or will Mikrotik update the DDNS to point to the remaining interface?
