.... will not really need to support IP v6 .. just the broadband device (the cable modem or DSL modem). The home router sits behind the broadband device.
That being said, if you own your broadband device then you will, at some point, need to think about replacing it with a IP v6 compliant device which is why you need to speak to your ISP to see what their plans and time line.
If you lease/rent the broadband device then I wouldn't worry about it too much because your ISP should replace it.
I also believe that when your ISP is about to convert over to IP v6 they will (should) send their customers a notice. I know our ISP did that when they did some large infrastructure upgrade a few years ago. In the announcement they listed the compatible cable modems and what we needed to do.
Having said all that, IP v6, I believe, will have more of an impact on corporate networks more so than home networks.
Regardless, it's better to start learning and stay up to date on IP v6 because it will be coming. There's no avoiding it now.
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