What is the use of second router in this setup? Any specific requirement?
For sure you can connect a network device behind R500 on its second eth port but second eth port acts as a bridge/switch port. Means second router you are going to connect to this port will get IP address from the same subnet (Assuming that AP is running on Unleashed code).
Please confirm your use case.
Regards, Syamantak Omer
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