To configure option 252 for a DHCP scope

  1. Click Start, point to All Programs, point to Administrative Tools, and then click DHCP.
  2. Right-click Scope Options, and then click Configure Options.
  3. Click Advanced, and then in Vendor Class, click Standard Options.
  4. In Available Options, select 252 Proxy Autodiscovery, and then click OK.


Perform this task on the relevant DHCP server.

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