@Kevin_Z 

Hi, Kevin,

The configuration is right. I have another router from D-Link and it's works. When I use de isp router, the service works to. Only with TP-Link the ivy doesn't work. 

In the same network, same configurations and hosts.

  Hi, @Kevin_Z,

Sorry,

1. Who is your ISP? TIM Fiber Home
2. What is your network topology, is it ISP modem--AX73? ISP -> ISP Home Modem (media converter) -> TP-LinkRouter (AX73)
3. Is the IPv4 connection on the AX73 good or not? What is the WAN IP address of it? Yes. IPv4 Works Perfectly. Wired and Wireless are very good.
4. Is the IPv6 connection type the same as IPv4? Are both PPPoE? Yes. Booth Share PPPoE Connection.

Acho que o firmware está bugado, tenho o mesmo problema com o Tp link Archer c5400 .. Fiberhome (roteador) Tp link C5400 (ponte) Pass-Through (ponte) IPV6 - trabalho perfeito. Mas tenho um grande problema ao conectar o fiberhome na ponte Fiberhome (ponte) Tp Link c5400 roteador (pppoe) ipv6 falha sem funcionar eu testei 4 outros roteadores e o ipv6 funciona normal quando pppoe, então o problema é 100% firmware, por favor atualize, precisamos deleFiberhome (router) Tp link C5400 (bridge) Pass-Through(bridge) IPV6 - work Perfect.
fiberhome on bridge Fiberhome (bridge) Tp Link c5400 router (pppoe) ipv6 fail no work i have tested 4 other router and ipv6 work normal when pppoe, then problem is 100% firmware, pls update we need it but update firmware tplink c5400 too (:

  @Lucas_Andrade 

Prezados,

Ate o momento, nao obtive nenhuma soluçao para o problema.

o AX73 continua da mesma forma, mesmo atualizando o firmware para a ultima versao. nada mudou.

O equipamento conecta via PPPoE, pega os IPs publicos IPVv4 e IPv6, internamente repassa o IPv4 via DHCP em faixa privada 192.168.0.0/24, recebe o IPv6 para a porta WAN, recebe o prefixo do IPv6, aloca o IPv6 na porta LAN, mas nao repassa os IPs para os clientes da rede.

Colocando o IPv6 da estacao de trabalho de forma fixa, obedecendo ao prefixo passado pela operadora e apontando o gateway para o IPv6 alocado no modem, o servico funciona, mas nao posso manter o ipv6 fixo pois o prefixo é renovado de forma automatica sempre que temos uma reconexao ou nova autenticacao do PPPoE.

  @Lucas_Andrade 

Segue diagrama de rede.

As configuracoes sao as mesmas do inicio do post.

I have always faced this IPv6 connection problem with my Archer C5400 router, but I always knew how to work around it. It's annoying and inconvenient, and it's really sad that the Archer C5400 has a bug like this, along with the even more irritating bug of limiting my bandwidth after a few hours of use and having to restart the router. But getting back to the subject…

How to bypass the inaccessible IPv6 issue:
1. After successfully connecting to the provider, it will return the IPv6 addresses, but IPv6 access will not work.
2. Change the LAN settings: If it's set to “SLAAC + Stateless DHCP”, switch to “SLAAC + RDNSS” and save. Then, go back to the previous setting and save again. You just need to change the settings, save, and return to the previous configuration, saving again. By doing this, your IPv6 network will work.

Note: Whenever the router restarts, you will need to perform the same procedure.

  @Dollynho 

Hello my friend,

Thanks for your answer, but i already try change this configuration and unfortunatly, doesn't work.

I disabled the IPV6 feature. Im waiting a new firmware version.