In article <[EMAIL PROTECTED]> (at Tue, 30 Jan 2007 08:02:08 -0500), Neil Horman <[EMAIL PROTECTED]> says:
> > I do not think we should copy neighbor information from (one of) > > default routers, but use temporary neigh entry (or neigh in new state) > > for such datagrams in stead. We should aware that: > > > Not sure how that is different from what I'm proposing. a neighbor entry that > maps a given host on the current subnet to the MAC of the default router, that > then gets flushed when DAD completes is temporary, as far as I can see. > > > 1) default router's link-layer address may change. > True, but if this changes, all our network connectivity is lost, until the > normal neighbor solicitation process completes anyway. No, router may update its link-layer address by NA with Override flag set. In that case, we must use new link-layer for subsequent packets from our opportunistic address duing DAD. > > 2) we may have more than one default routers. > True, but I would think we could select any of them and this would work. > Granted, we wouldn't use all the default routers in the table as we would with > routed frames, but I'm not sure how we avoid that. I mean, if the status of the selected default router has changed or has been deleted, we should try other router, at least. > > 3) the default router's link-layer may be invalidated. > > > yes, but this would be bad for the same reason as (1) We MUST take this into account. --yoshfuji - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
