Hi,
I expect this is not the right place to ask this question but thought someone may have seen a similar issue before.
I don't necessarily think that it is the CPE at fault here, but you all know the layout, I think, but here it is again from an end laptop perspective:
Laptop LAN --> CPE LAN - CPE WAN --> SRX340 --> Core --> Upstream ISP.
If I ping, for example, facebook IPv6 address from SRX340, it all works fine. If I ping facebook IPv6 from the CPE it works fine. If I try and ping from the Windows 10 laptop I cannot even ping the WAN interface on the CPE. When I complete an "ipconfig" on the Laptop, I notice that the IPv6 address given is not even in the range or derivative of the WAN assigned address.
The CPE is a Draytek Vigor 2860 and I have configured it as per their manual for IPv6.
If anyone has come across this type of error before, would be good to know how you resolved it.