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 (http://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.
Do you mean https://github.com/opnsense/core/issues/9135 ?
Cheers,
Franco
With Android devices I strongly recommend using SLAAC only. DHCPv6 is not necessary.
That is it exactly:
https://github.com/opnsense/core/issues/9135 (https://github.com/opnsense/core/issues/9135)
Ok, we'll be working on it for 26.1 and it will likely be available sooner than that (25.7.x).
Cheers,
Franco