You should just forward this NAT to the device which is responsible for the subnet. Once I had szenario, nearly like yours, and have been told to do the following: Lancom --> Meraki --> Camera been told to configure the Lancom the Camera is "behind" the MX (configured next hop) and within the MX I did the forward, to destination. Should be the same in your case, but you have Meraki first and then something else. To be honest, it didn´t work at my scenario 😄 LINK to Post
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