Internet disconnecting intermittently.

@ComcastChe,

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.  

https://forums.xfinity.com/t5/Your-Home-Network/Your-ISP-s-DHCP-is-not-functioning-properly-ASUS-router/td-p/3331178#

Thanks,