Fred, > Call this "making sure I'm on the same page as anyone else"… > > RFC 4941 describes privacy addresses, and RFC 4291 describes an EID based on > a MAC Address. RFC 4862 describes stateless address autoconfiguration, and > uses RFC 4861's duplicate address detection mechanism. > > My question is: what happens if any of them discovers that it has created an > address that is already in use in the network? > > There would appear to be two options: > (1) "ah, OK, I guess I didn't really want to talk today" > (2) Following RFC 4941, guess again until one creates a unique address > > Is it fair to assume that implementations do DAD and follow (2)?
implementations I'm familiar with do 1. it may be a fair assumption that if an address based on the MAC address is duplicate, the MAC address itself is a duplicate. cheers, Ole
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