PPPoE connection to ISP no ipv6 DHCP- ULA address self allocated

Good Morning, I have been trying to understand why I have no IPV6 on my network. The network infrastructure is ALta throughout. The Route10 is configured for WAN2 and PPPoe. My service provider is in the UK called BT Internet. I know the PD is 56 as have configured that on other routers.

Looking at the interface stats via Ifconfig the router is allocating itself an address in the ULA range ( inet6 addr: fe80::8c45:6a0e:f428:f5f/128 )

IPV4 is stable and robust.

I disconnected the WAN connection from the SFP for 5 seconds(have tried 3 SFP’s) to initiate a reconnect but alas It did not recover and had to manually “power off/power on” the Route10 at the wall for it to recover. However still no IPv6 upon restart.

If i replace the route 10 with a Synology RT6600ax or an old ASUS router IPv6 recovers.

As far as I can see there are very little options on the WAN DHCP configuration for IPv6 so not much to get wrong . I have not tried on Wan 1 as yet as that feeds into the switched network.

Hello,

This is a known bug with PPPoe and will be fixed soon, see this No IPv6 on VLAN

There is a temp fix if you’re ok to SSH into the router or you can ask someone from the staff to do it for you.

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I should be able to help you get it sorted. We will need to manually modify the configuration to work around a bug before the fix is rolled out. If that’s of interest to you, please let me know.

It’s relatively straightforward, and we can do it multiple ways depending on your preference. I can either request some details from you, and then create the file and share it so you can either copy + paste it via into your preferred shell editor (both vi and nano are available), or you could transfer it via SCP, then I’ll give you commands to set permissions. Or if you’d rather, I can technically do it all remotely—I would need to be added to your site as an admin so that I could use web terminal.

Im sorry I cant reply to emails at the moment as Microsoft has issues with recent updates detrimentally affecting email via outlook.com accounts. Once email has recovered I am ha[[y to ad an Administrator to my site to facilitate the temp fix.

Thanks

Don

No worries! Sounds good, Don. I’ll send you a DM with my email. It actually doesn’t rely on Outlook for the invitation side of things, but if you’d like to wait until your email comms are restored for our communication before then that is totally okay with me. I’m just sending it now so you have it for when you are ready.

FWIW, invites are sent from Control, and are found in the same location on the mobile app and web management. Settings>Users, and then click or tap the Invite a user button and enter the desired email to send the invite to. I will need admin access to be able to access web terminal.

I was granted an invite to the site. so today I wrote a script to make these changes persistent in the interim. I’m now seeing a /56 being assigned as expected, and a /64 on the VLANs requesting IPv6. This workaround for IPv6 PPPoE should continue to work until a proper fix is in place.

If anyone else ends up reading this before the fix is in place, please don’t hesitate to reach out.