DPC3941T user - similar experience. While on my phone, the modem reset, then connected to the modem's 5 setting, not 2.4 as we originally used. When I checked the connection information, I was connected to utopia.net - same IP address and Subnet as Comcast, but different Router and DNS. There was a brief disconnect again and I was reconnected to Comcast, but at the modem's 5 setting, not 2.4.
When I went to my laptop (connected via ethernet and in airplane mode), I was still connected to 2.4, but it is identified as a public network - we also opted-out of the WIFI hotspot option. I checked our settings, the opt-out is still listed as in effect, but our connection was changed to the 5, not the 2.4.
I am interested in a explanation as well.
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