@Mudslideyo What client device are you testing this on? Windows 10/11 Ignores IPv6 RDDNS IF IPv4 is active/provided by DHCP. Thus If the Deco is configured for SLAAC+RDDNS a Windows system will not...

I ended up installing OpenWRT, and Setup Multiple SSIDs on thier proper VLANs. And tada, IPv6 working perfectly on every one. freaking sad TP-Link can't even pull off somthing so simple.

For the heck of it did some extensive testing today with the last Beta they sent me 3.16.9 Build 170111 Rel.35852n (Beta). Seems every boot or config save changes which SSID has working IPv6, First...

ISP using CGNAT SHOULD be using 100.64.0.1- 100.127.255.254 but often dont. My ISP which provides fiber via GPON does the same thing except using 10.40.x.x. But you can request a Public IP and they...

That is your issue. You are behind CGNAT, works like your own NAT router but on a much larger scale.. You will never be able to get ports forwarded as long as you are behind it.Only option is request...

Who is you ISP? What Modem is in front of your C9? Does you C9 show a Public IP or Private Ip on its WAN page?