Greetings, programs. Every time we get a firmware update higher than 29.6.1, all of our AP's across all sites stop sending our RADIUS secret key. The NPS servers on the back end stop authenticating users, and we effectively have an outage. I've raised a ticket or two with Meraki support, and provided some packet captures showing the field (it's all 0's rather than the key), but haven't had any luck figuring out an actual fix for it. The only thing that has corrected the issue so far has been to revert back to MR 29.6.1. I'd appreciate it if anyone else could weigh in here, as we're at a loss and can't stay on 29.6.1 forever.
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