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<p><tt>Roland Dreier <rdreier@cisco.com> wrote on 03/01/2007 03:43:09 PM:<br>
<br>
> > Setting carrier on should be OK here. ND can't send out before the<br>
> > interface is capable for sending any packet. And if ND messages can't reach<br>
> > the correct destination because of multicast join failure later then the<br>
> > IPv6 address is useless.<br>
> <br>
> Your patch turns on the carrier before all multicast joins have<br>
> completed. But if ND messages are sent too early, and a duplicate<br>
> address is chosen, and then multicast joins complete later, a fabric<br>
> might end up with duplicate IPv6 link-local addresses, right? Or is<br>
> there some reason that can't happen?<br>
> <br>
> - R.</tt><br>
<br>
<tt>IPv6 ND doesn't prevent the duplicate IPv6 link-local address in the network. It only saves a warning in /var/log/messages to indicate that this address is duplicated in the network. ND can detect this when sending packets.</tt><br>
<br>
Thanks<br>
Shirley Ma</body></html>