@Karenatl
For the most part, disabling IPv6 should have no real negative impact for normal users. I leave them disabled on my own home networks due to some security settings conflicts it causes when enabled. Having said that, some Windows features actually rely on it being enabled and has been reported to "break" Windows when disabled. I consider Windows to be broken by design anyway, so how much more can one break it? There are of course other server and network reasons to leave enabled, but not of any real concern to a home user. (I can see the lines of IPv6 zealots forming now to tell me how wrong I am.)
Regarding the BGW-320, this is the router I mentioned in the above post. It is a managed tri-band router that does not allow a lot of user interaction/changes. And it has that feature of the 5ghz bands and use of DFS channels that Roku cannot use. As a result, you may find that all your Roku devices will have to gravitate to the 2.4ghz band. (Users have been calling for AT&T to allow for manual control over 5ghz channels for awhile now.)
However, each network is different and the new router may work just fine for your environment. Again, my personal preference is to leave the ISP router as a gateway/modem and then bridge a router that allows for network configuration and serves as the router/DHCP server for the devices to connect to. (ie. a Netgear, TP-Link, Motorola, etc).
The benefit of using an ISP router, however, is that it will automatically configure and manage your network, and is pretty well configured to be "hands-off". The negative is that when problems develop, you may be limited to what devices can be used and how the devices can be used on the network . (compatibility issues.)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102
