As far as I know, as long as one of the IP addresses in a local name server's root hints file is correct and that root name server is reachable, the local name server will operate correctly. Changes to the root hints file are currently not terribly frequent, and updating it once per half year (or maybe even less frequent) does not seem like an inordinately heavy burden.
I should probably not answer this since it has likely been answered. The tradeoff is one of a small number of well known routes that won't change vs periodically updating an increasingly large (20-20 million+) root hints files.
wanting to do the same or similar things. As the recent events should make evident, the last thing we need right now is creating a precedent for spreading /32 routes or needlessly propagating other "special-purpose" and non-aggregateable routes.
- Havard
Cisco Routers are going to fail, regardless of what we do with regard to controling routing table entries. We'll hit that brick wall soon and will bounce off and move on. -- --bill