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Address Resolution Protocol (ARP) ARP is not required for IPv4 CS, as MAC address is not used for data path Mailing list discussion ARP packets must not be transmitted over the air for IPv4 CS ARP does not have the IPv4 header so the ARP packets cannot be mapped onto 802.16 MAC connection Solution for legacy IPv4 Stack A shim layer between the IPv4 stack and the 802.16 IPCS layer at the MS to filter ARP requests arriving from the IPv4 stack and respond with any MAC address However this is an implementation issue |