@LVDX 

I apologize for my previous post and explain the problem I encountered.I am a customer of a French ISP (SFR) and I connected my Déco system to my ISP's router. However, this router has DHCPV6 and SLAAC. It was therefore necessary to configure the Déco system with the option "bridge" which can be found in the deco IPv6 settings.

  @LVDX In "Router" mode, what was your IPV6 Internet Connection Type & method to get IPV6 address?

  @yves_i still in routeur mode

  @LVDX what is your IPV6 Internet Connection Type & method to get IPV6 address?

  @LVDX 

Is everything working correctly for you?

Are you satisfied with the "bridge" setting?

My P9 Deco is getting a dynamic IPv6 address from my ISP, and is distributing IPv6 addresses to my local device.  It is working well, all devices being compliant with ipv6.

I decided to use slaac+rdnss instead of dhcpv6, because some local devices are apparently compatible with dhcpv6.

  @LVDX 

You are not describing what is working and what is not working.

Here is what I configured, and it works with my ISP.  I do not know if it will work with your ISP.

My config for IPv6:

• Pppoe
  • Sync ipv4 account: on
  • Get ipv6 address:  auto
  • Prefix delegation on
  • Assigned type slaac+rdnss

  @LVDX 

What is your setting for IPv4?

Did you try "dynamic IP" for IPv6?

What are you trying to improve?  Are your devices working on IPV6?