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Recently changed to T-mobile Home Internet. I understand CG-NAT, and it is an IPv6 environment, the public IPv4 we're given is shared. But I'm guessing the pubilc ipv6 address (dynamic) is unique. In theory, if T-mo wasn't blocking unsolicited inbound IPv6 traffic, would DDNS work?

I know in order to have some remote access (like Plex), I need a local app tunnelling to an outside service so my accounts/services know where my local network is. I'm just trying to understand why those services (Cloudflare Tunnel, local expose, etc) work while the DDNS on my asus router doesn't.

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