Google phone can not do 802.1x authentication on cloudnet

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Using Google Pixel, android 11, cannot connect to wifi network using 802.1x, configuration is ok for both laptop and iOS phone.

Google Pixel android 11 do not support option “Don’t validate CA” like others phone. 

Android 11 has a fix in a security update released in December 2020: PSA: Android 11 will no longer let you insecurely connect to enterprise WiFi networks

This change is a direct result of connecting to WiFi with security wpa2- The option to Do Not Validate CA certificates has been removed when connecting to enterprise WiFi

after checking the configuration and discuss about the issue, we found that customer used built-in server. Which means AAA server in the AP.

So you have to purchase a trusted SSL certificate from your local CA. Then insert them into the AP.

Because Android 11 must check the CA certificate, so it is necessary to have a trusted certification in AP.

By the way, if you choose the external server, the external server needs a trusted SSL, too