Anywhere that is using wpa_supplicant 2.4 or later without specific configuration to disable TLS 1.2 will hit this issue with affected RADIUS servers. TLS 1.2 is rightly enabled by default.
(Android Marshmallow uses such a version of wpa_supplicant).
You can certainly disable TLS 1.2 in the configuration for wpa_supplicant if you absolutely must get a usable connection.
Do so with phase1="tls_disable_tlsv1_2=1"
Ideally though you would seek to get the RADIUS server updates to a version that isn't broken.
Anywhere that is using wpa_supplicant 2.4 or later without specific configuration to disable TLS 1.2 will hit this issue with affected RADIUS servers. TLS 1.2 is rightly enabled by default.
(Android Marshmallow uses such a version of wpa_supplicant).
You can certainly disable TLS 1.2 in the configuration for wpa_supplicant if you absolutely must get a usable connection.
Do so with phase1= "tls_disable_ tlsv1_2= 1"
Ideally though you would seek to get the RADIUS server updates to a version that isn't broken.