I dont think this fully solved.
Yeah, turning on persistent NAT on the Sonicwall dramatically fixes them popping on and offline - they bounce up and down quite quickly watching the management web interface - but there are still emails coming in, sure a lot less, but still coming in with that change of device state.
This is one thing i posted about them (this was well after i enabled that NAT setting:
But today, i got an email asking if there was a wifi issue in one of the rooms, and as i was checking the management web interface, i got an email about the AP in that room changing state to “connection lost”
Remember i was in the management interface, and I didn't see that AP go down, the status lights remained green.
So, there is something still going on, and i don't buy that “must be latency in your network, sorry i just don't. We are a school and have 160 AP’s (mostly AP650(AH) and some outdoor AP1130’s) and ill get those emails when no one is at school, and thats why i dont believe that latency is the cause. It might be for some people, but not here especially when no one is on campus.
But have a read of the link in this post, because its very odd that those emails went away several updates ago. I’m talking when you login to the management interface and have the banner at the top that states “been updated click to see whats new” message (and not firmware updates), and emails came back after an update or two ago. Very, very odd…… Are whatever you are doing in the background updates affecting the AP’s at customer locations. What are you updating.
Post back here what you think.