3.2.7.1 DhcpAppendVendorSpecificOption
The higher-level protocol implementations use this method to append the vendor-specific options in the DHCPv4 message packets (DHCPOFFER and DHCPACK) created in Receiving a DHCPDISCOVER Message (section 3.2.5.1), Receiving a DHCPREQUEST Message (section 3.2.5.2), and Receiving a DHCPINFORM Message (section 3.2.5.4). When the cumulative size of all the vendor-specific options being sent in a message exceeds 255 bytes, the Microsoft Encoding Long Options Packet, specified in section 2.2.9, MUST be used. The method takes option ID, option data length, and option data as input.