Danny, On Nov 17, 2009, at 21:46 MST, Danny McPherson wrote: > On Nov 17, 2009, at 8:46 AM, Tony Li wrote: > >>> Do not depend on DNS to get packet delivered. >> >> Sorry, we already broke that. When DNS is down, the net is down. ;-) > > Com'n Tony, that's a little disingenuous (unless you > were strictly kidding and not just smirking there :-) I don't think he was, particularly in light of the vast majority of end-users perception that regardless of whether DNS fails or IP connectivity to a Web site fails the "Internet is down". > The point is that circular dependencies are bad, and a routing > and forwarding substrate function that relies on DNS reachability > isn't particularly desirable. One way to avoid this is to number the DNS and/or mapping system components [exclusively] inside Locator space, thus there's no circular dependence on getting _to_ a "mapping resolver". Thus, the routing system containing the set of LOC's does not have a circular dependency ... -shane
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