Interesting results with the newest Comcast offering at home. 2 gig download and 200m upload. The upload seems a little jumpy..of course this is during peak times.

The DOCSIS3.1 modem has a 2.5G ethernet port, but fortunately one of my 10G SFP+ BaseTs supports 2.5G which works in the UDM Pro. From there 10G to everything else.