In your previous mail you wrote: > Could you describe why exactly IPv6 can't run on the (layer 2?) WLAN > infrastructure? That ND extensively, without any valid reason to do so, use multicast, which is not acknowledged at WLAN L2, means IPv6 or its ND is unreliable over congested WLAN. If multicast ND packet is lost by congestion, it is not retransmitted by L2. => Masataka san, your argument is right (I saw 40% lost rate on multicast over IEEE 802.11b) but it applies to IPv4 (ARP uses broadcast) too...
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