IPv6 Causing WiFi Dropouts

[tck81]

What/How would enabling IPv6 cause WiFi dropouts? My phone has been dropping WiFi off an on randomly for many months. It disconnects then connects very quickly, typically ~1 second. I was downloading a file once and it kept doing this over and over and over to where there was no data transfer. I believe it began with 384.6 but might have been 384.7, at least I noticed it then so maybe it has always happened? I thought it might be a hardware/software issue with my phone and believed it was on its way out. I decided to try and find the cause of the issue by factory resetting my phone (didn't work) and then look more into the router. I started by disabling IPv6 and lo and behold my WiFi dropouts stopped, for 2 days. I just enabled IPv6 again and the WiFi dropouts began to happen almost immediately.

Here are the logs from my phone: https://drive.google.com/open?id=1KitWt1ODuHoi2ZDIdLlTtjvfH-4yxk9r

 

[tck81]

An interesting update to my find. I was looking back at some Android forum posts to try and find when this all began for me as I thought it was related to my phone's software... It began right when 384.5 was released (2018-05-13) and coincidentally is when I updated to Android Oreo. So I'm not sure if it's the router software rebase or phone software at this point... If it's the router software I'd like to help troubleshoot to fix in future releases.