Hi folks Today, 802.11 technology is the most famous L2 tech in our market. and most guys agree that. However there are some problem to use an IPv6 address autoconfiguration since 802.11 station can not detect duplicated address with same MAC address.
Please let me know your view on this.... I believe it should be considered as one of node requirement... http://home.megapass.co.kr/~natpp00/IPv6DADfor802.11.txt 1. Introduction In order to generate unique address, an IPv6 nodes has to perform DAD (Duplicate Address Detection) procedure when the IPv6 node tries to make its own IPv6 address including link-local and global address. If IPv6 node detects address duplication by Neighbor Advertisement message from duplicated node, then the duplicated address can not be used for this node, then IPv6 node MUST generate its own address by other mechanism like DHCP or Random Interface ID generation etc. Generally, address duplication is happened to the same Interface ID which is composed of 48bit/64bit MAC address. Therefore, when same MAC address is existed in the same link, one of these nodes can not make its IPv6 address using address autoconfiguration mechanism. However, if the same MAC address is existed in the same link as 802.11, there are some problems and considerations for IPv6 address autoconfiguration. IPv6 node in 802.11 environment will never be able to receive the DAD packets if its MAC address is same as another node, because of the frame filtering based on the source MAC address. In this case the DAD always succeeds even though the addresses are duplicate. This memo tries to consider above problem and suggest possible solutions. Note that this consideration SHOULD be discussed at the IPv6 node requirements. Daniel (Soohong Daniel Park) Mobile Platform Lab. Samsung Electronics TEL:+82-31-200-4508 FAX:+82-31-200-3147 mailto:[EMAIL PROTECTED] -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
