On Feb 6, 2008 12:11 AM, Mark Andrews <[EMAIL PROTECTED]> wrote: >> (from me) > >How does a cache-resolver know that it's time to issue a query with edns0? > > cache-resolver that support EDNS0 will make EDNS0 queries > by default. They will fallback to plain DNS if the query > fails or they get a response that indicated the authoritative > server doesn't support EDNS. > > BIND's been making EDNS0 queries for ~8 years now. If your > cache-resolver doesn't support EDNS it is long past time to > upgrade. >
excellent, thanks! (as always). Any thoughts on the possible lack of resilence from losing 9 server names/ips in the v4 to v6 move? (and I realize that later most/all root boxes will have both addresses)
