Meraki MX85 DHCPv6-PD issues

[incinrea]

I'm running MX85 with 18.205

I've issues with DHCPv6-PD

After some time, the dashboard says that my VLAN Assignment IPv6 Subnet Prefixes status is "Expiring Soon," causing my endpoint not to get IPv6 while at the Delegated Prefixes status; the Prefix should expire in another 3 days.

Please advise.

[incinrea]

I need to reboot my MX85 multiple time to get back the DHCPv6-PD. Here is the result after reboot for the 5x time (i'm not kidding)

[CLEBERPENTEADO]

Hello!

Same problem here.

I rebooted way more than 5 times... without success...

[gmartine]

@CLEBERPENTEADO I have the same behavior in at least two different MX75.  It shows a successfull DHCPv6-PD Request but the WAN delegated prefix section shows as either Fully Utilized or Not Assignable.  In addition I don't see a /64 assigned to any of my VLANs.  Maybe @PhilipDAth can assist somehow?

[PhilipDAth]

This is an MX75 running 18.211, and the DHCPv6 is working as expected.

If you are not running 18.211 or better - maybe start there.

[gmartine]

I am running that code.  It seems to be it is just a cosmetic bug.  Clients are getting IPv6 assignments from the right /64 but the assignments are not visible under IPv6 prefixes section.