prefix delegation - ipv6 - kea

[rdunkle84]

I switched to Kea and using dhcpv6.  I noticed that Android 16 devices started to work with and use ipv6.  I found that each device was requesting a dedicated prefix.  Appears strange and wasteful.   I looked into this and found an article:
android-developers.googleblog.com/2025/09/simplifying-advanced-networking-with.html

I am using OPNsense 25.7.4 and PFSense. The OPNsense has some sort of issue with the dhcpv6, prefix delegation, and routing.  I think the routes are not being created for prefix delegation.  I found that PFsense appears to work with the dhcpv6, and prefix delegation without a problem.

[franco]

Do you mean https://github.com/opnsense/core/issues/9135 ?


Cheers,
Franco

[Patrick M. Hausen]

With Android devices I strongly recommend using SLAAC only. DHCPv6 is not necessary.

[rdunkle84]

That is it exactly:
https://github.com/opnsense/core/issues/9135

[franco]

Ok, we'll be working on it for 26.1 and it will likely be available sooner than that (25.7.x).


Cheers,
Franco