24.7.3 update experience: back online again on android

[Saarbremer]

Hi,

some of the major glitches w.r.t. IPv6 seemed to have broken android connectivity via wifi. Seems to work with 24.7.3 again.

Was investigating since 24.7.2 because some androids in my network were dropping wifi every now and then. The wifi is provided by unifi UAPs (no gateway). Windows and Linux PCs had no issue. Androids via wired LAN were also fine. I suspect a possible issue with IPv6 that caused the androids to think that wifi has no internet connection and drop it. Unifi firmware downgrades would not have any beneficial effect and could be ruled out.

I also noticed some reporting by OPNsense that fe80:: wants to talk to 2a00::. I don't know if that's relevant to my issues or just an effect during Android's connection drops.

Nevertheless, androids are now online without frequent drops. 24.7.3 fixed it. Hope that helps others with the same issue.

[sbellon]

Just here to +1 everything you said. I had precisely the same symptoms and with 24.7.3 everything is back to normal again.

[Saarbremer]

In 24.7.2 I found ICMPv6 134 Destination Unreachable before the messages like these, my comments in ():
fe80::xxx (Android device)   -> 2a00:1450:4005:801::200a (google as)   ICMPv6   134   Destination Unreachable (no route to destination)

A neighbor advertisement for the device's gua is not shown until after that destination unreachable. I wonder if that was the issue.

Nevertheless, 24.7.3. works and I will now update the unifi ap's back to the most recent fw.