Meraki MX85 DHCPv6-PD issues

incinrea
Here to help

Meraki MX85 DHCPv6-PD issues

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.Screenshot 2023-11-27 at 10.12.06 PM.png

5 Replies 5
incinrea
Here to help

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)Screenshot 2023-11-27 at 11.01.04 PM.png

CLEBERPENTEADO
Here to help

Hello!

Same problem here.

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

gmartine
Here to help

@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
Kind of a big deal
Kind of a big deal

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

 

PhilipDAth_1-1728449233774.png

 

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

gmartine
Here to help

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.

 

ipv6 prefixes.pngipv6 assignment.png

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