IDE 9.4 is interpreting Mac Auth from a Cisco Wireless Lan Controller as a Radius intead of Mac Auth request. This is preventing me from using IDE to authenticate using Mac Auth.
No should not impact. Because you likely have various auth protocols enabled (incl. TLS and others) on the Authentication Policy, and the switch/AP will first attempt to auth via more secure protocols and IDE will respond accordingly.
Ok. Setting ‘mac-address source type’ to ‘user-name’ fixed the issue. One last related question. Will changing this option in IDE have any impact on 802.1x authentications or is this setting only used for MacAuth?
Do you have MAC Auth enabled in the Authenticator configuration for that Cisco AP? and also have the appropriate MAC Auth Access Policy associated with that AP?