yes generally you'll need to configure MAC caching. if you had used the wizard in clear Pass to create a Guest service, it would have created two services. One for captive portal redirection and the other for MAC auth if the guest account is still active.
check these videos
https://www.youtube.com/watch?v=u6hyEtqzGOA&list=PLsYGHuNuBZcb0xD05v9zdwv7NlUG_8oJS&index=24
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