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3.1.7.2 DhcpExtractVendorSpecificOption

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The higher-level protocol implementations use this method to extract the vendor-specific options in the DHCPv4 message packets received through Receiving a DHCPOFFER (section 3.1.5.1) and Receiving a DHCPACK (section 3.1.5.2). When the cumulative size of all the vendor-specific options sent in a message exceeds 255 bytes, then the Microsoft Encoding Long Options Packet, specified in section 2.2.9, MUST be used.