I've searched just about everywhere I can think to find the correct settings for my router/firewall to get an IPv6 address. A few years ago I was getting one but now I can't seem to pull one using any settings. Is spectrum handing out DHCP6, SLAAC, 6rd or 6to4 Tunnels? Looking around at the forums it looks like others have the same questions but I don't see any answers.
Doesn't matter if you have a legacy or new Spectrum residential service account, your external (public) IP address will still be IPv4. This is true even if for some reason you have configured your home LAN as IPv6. The Spectrum DNS which is located at 126.96.36.199 and 62 is dual stack and will convert external IPv6 sites.
On my TP-Link router, I have set:
WAN Connection type: DHCPv6
Get IPV6 Prefix delegation
Get IPV6 DNS Server automatically
IPV6 Address Assign Type: SLAAC