I just switched from Comcast to Fios and have a DVR system I’m trying to get working.
The Fios Ethernet cable goes directly into the Google wifi router (no Verizon router)
The DVR does show up as a connected device on the Google home app.
Ive set the port forwarding the same as on the old router (6036 & 81, both protocols).
Yet, I am still unable to connect to the DVR.
Is the DVR a fios ONE set-top-box? If so, a Verizon router must be used to activate it. Once activated, it works much, much better with a Verizon router.
Some more details about your equipment will help.