I just signed up for Xfinity last Tuesday and puschased my own modem (Motorola MG7540). I've been getting DNS server errors for the last three days now. I've tried riunning IPCONFIG to flush the DNS, nosing around on the configuration manager of my router, and turing it on/off multiple times, but nothing has worked thus far.
I saw on the configuration manager that there was an option to customize the IPv4 DNS server addresses. The current ones are the infamous 18.104.22.168 and 22.214.171.124. I'm VERY much interested in if you have found a solution to this. I happen to like my router; it's got a lot of nice bells and whistles to play with!
... View more