IPV6 on ER605

Hello everyone,

I need help. I set up a Omada environment with Switches, APs and ER605 (V1, FW: 1.2.0 Build 20220114). System is running, I got an internet connection and network works fine. But I have one last issue: IPV6.

My ER605 is linked correctly to my cable Modem I got from my ISP - this is running in bridge mode. To get IPV4 and IPV6 addresses I use “Dynamic IP”. It works without problems for IPV4 and I get my public address.

But it doesn’t work for IPV6. I set up the configuration correct: prefix delegation /56 (I got from my ISP), connection type (“Dynamic IP (SLAAC/DHCPv6)) and the other parts of configurations are set on “auto” or similar definition, I think should be fine.

So. Then I tried hundreds of times to click on “connect” to get my IPV6 connection running. But it doesn’t work. Gateway-address is displayed and SOMETIMES I get my correct DNS Server addresses from the server and the status is “online” for a few seconds, then connection switches back to offline. But I don’t get an IPV6 public address.

I don’t know what’s going on there? When I plug in my computer direct to my Modem I got an IP address (V4 and V6), fine - but it doesn’t work with my ER605.

So, at the moment I am using IPV4 only. But I think about switching back to Router mode of my ISP device, cause it’s working fine there. Or I need to try a complete other device. I am frustrated.

Does anybody have similar problems? Or maybe is there any known issue? Would be fine for me so then I would know, that the problem is not caused by me. Google doesn’t find so many results with this topic. Got a feeling, that nobody uses this device :D

Thank you and kind regards

Manuel