strange client in dhcp

what is this?
ros version 6.32.4 ipv4
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From what I read online, if a device specifies a client-id in a dhcp request, that client ID is how a DHCP server shall identify that device. If a client-id is not specified, then the MAC address of the client will be used to identify the device.

I can’t figure out the point of client-ids when identifying clients by MAC works ok.

thank u for the information. so propably that client specify this id!