William Herrin wrote: >> You miss multicast storm caused by DAD.
> Second, in the hotspot scenarios where this is likely to be a problem > (in IPv4 -or- IPv6) it's addressed by the "AP isolation" feature As you stated : I think Masataka meant to say (and said previously) that the DHCP : request from the wifi station is, like all packets from the wifi : station to the AP, subject to wifi's layer 2 error recovery. that is not a problem for IPv4 ARP and DHCP. > that's getting close to omnipresent even in the low end APs. With this > feature enabled, stations are not allowed to talk to each other over > the wlan; they can only talk to hosts on the wired side of the lan. > The DAD packets are simply never sent to the other stations. You are saying to disable DAD, which is a violation of SLAAC. > In theory there are some problems with this. In practice, it's in wide > deployment and has been demonstrated to work just fine. Tell it to IETF to modify SLAAC to exclude DAD. Masataka Ohta