Hi, I don't understand a specific point in DAD procedure specified in RFC 4862. In section 5.4.3, it is said:
5.4.3. Receiving Neighbor Solicitation Messages [snip] If the source address of the Neighbor Solicitation is the unspecified address, the solicitation is from a node performing Duplicate Address Detection. If the solicitation is from another node, the tentative address is a duplicate and should not be used (by either node). ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ But I must admit I don't see how the another node would be aware of the tentative address is a duplicate. Indeed, as the first node has to stop DAD after the another node's NS message reception, this first node should not send new NS messages with the same tentative address and so the another node should validate this address ... Did I miss something? Thanks in advance for your help. Best regards. JMC. -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
