CDP enable after factory reset cause the phone can't obtain IP address

[ccy]

I have a situation here after upgrading to latest V83 firmware on my T23G phone.

Previously, each time I reset to factory, the phone can obtain IP address from DHCP service without problem.

Recently, I discover that reset to factory, some phone can obtain IP address but some phone can't.

After further investigation, I notice those phone connect directly to core switch can get IP address. For those phone connect to access switch or nested switch, it can't get the IP address.

I further notice that if the cdp was enable in this new firmware. If I set the cdp enable to false explicitly after factory reset, I can get IP address for phones connected to access switch.

Please rectify this problem.

Thank you.