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How do I limit Mesh DFU to just my provisioned mesh network?

I was reading about Mesh DFU and noticed that when it happens, the receiving node will rebroadcast it to all devices within radio range. It seems like devices will pick up the update if the signature is correct, the application ID matches its current application ID, and if the version is greater than its current version. So I was wondering, is there a way to limit the DFU to just a particular mesh network?

Suppose I have some devices provisioned for my own network and my neighbor has some devices provisioned for his network. These devices are all running the same application (and hence the same application ID). If I send out an update via Mesh DFU to my devices, will my neighbor's devices also get the update (even though they're provisioned for a different network)?

Thanks!

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