Open Radar

 
Summary:
My ISP supports IPv6 and the WAN addresses are handed out via SLAAC and DHCPv6 Prefix Delegation.

If I connect my Mac directly to the Modem (Fiber to Ethernet converter) everything works fine and and an IPv6 address is set.

However, if I connect the modem to my TimeCapsule's WAN port, the TimeCapsule does not 'receive' an IPv6 address. The relevant settings are as follows:

Configure IPv6: Automatically
IPv6 Mode: Native
Enable IPv6 Connection Sharing: Active

I also attached the full TimeCapsule configuration.

The ISP in question is Fiber7 (https://www.fiber7.ch) and as far as I know they are aware of the issue and other customers are experiencing the same problem with AirPort base stations. I am unsure what steps they might have taken as I only just contacted them as well. However IPv6 seems to work fine for customers with other home routers and since it also works fine when directly connected to a Mac, this might be an issue with the AirPort base stations.

Are there any logs or diagnostics I can retrieve of the TimeCapsule and attach here?

Steps to Reproduce:
1. Get an apartment in one of the areas supported by Fiber7 (here in Switzerland ;-))
2. Get Fiber7
3. Connect Modem to AirPort base station
4. Enable IPv6

Expected Results:
The AirPort base station should receive an IPv6 address

Actual Results:
The AirPort base station does not receive an IPv6 address