Internet disconnecting intermittently.
Using RT-AC5300 into a CM1000.
Same issue as the below thread. Comcast has a bunch of outages last week in my area. All of the sudden, internet randomly drops a couple of times an hour for 5-15 minutes. At the request of tech support I bought a new modem. Same issue. Plugging directly into the modem during the outages gives the same issue, ruling out the router. When I am in the router I see messages about Your-ISP-s-DHCP-is-not-functioning-properly.