Spectrum doesnt’t really support ipv6 either. I have turned it on at times, run for weeks without issue, and then something breaks. When i pushed support, they always tell me its not really supported.

I think their support is a bit divorced from whatever the engineering reality is. I asked their support / sales staff about IPv6 and they said it was "only available w/ their business class service." I ended up buying my own modem and IPv6 has worked flawlessly ever since. The Motorola SB6580 they provided nominally supported IPv6, but they hadn't updated the firmware on it in years. Makes me wonder what exactly I was paying for w/ my "modem rental" fee.

Out of curiosity are you in one of the areas Spectrum took over, or are you legitimately on Charter's network? I am in one of the TimeWarner Cable areas they acquired, the IPv6 support was already in place well before the buyout.

I'm in a converted TimeWarner territory. I got marketing announcements several years ago that ipv6 was supported, and first started trying then. I usually try once or twice a year to get it going again, and it never works for more than a few weeks before I turn it off again out of frustration.