Now that i'm done complaining i'll add some of the symptoms we had so others can find this post. Our copiers would fail to log in via the papercut software Our copiers would not scan to email with papercut software. It would get an http error that was likely due to dropped packets. Loading microsoft portals would time out. endpoint.microsoft.com and portal.azure.com would run extremely slow or fail completely. This was especially noticeable when trying to load our licenses on portal.azure.com Microsoft online o365 logins would frequently fail/timeout. we would have to try try again. All of this was apparently caused by this "known" issue. "Enabling NAT detection may cause issues with TCP streams resulting in pages failing to load entirely or taking longer than usual to load (present since MS 14)" This is listed as a known issue for 15.18, but was not listed in our previous 14.33.1. Didn't get to see this known issue until we update our firmware this week. Please Meraki, disable this feature. It should not be able to be turned on. No one would want the trade off of TCP connections failing just to detect NAT. If you MUST leave the option please put giant warnings in the dashboard when it is turned on.
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