DHCP unknown option value 0x52 alarm

Hi all master,Why myweb server have a DHCP unknown option value 0x52 alarm per 4 hours every day?
thanks ,ping network is ok
 

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Why myweb server have a DHCP unknown option value 0x52 alarm per 4 hours every day?
In my opinion servers shouldn't use DHCP. You're probably getting it every time the lease is renewed. You can safely ignore that option, it's not relevant for your client addresses.

Option 82 is supposed to be used in distributed DHCP server/relay environment, where relays insert additional information to identify the client’s point of attachment.
 
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