DDNS Best practices in a complex environment?

[Jeffrey Collyer]

Is there a best practices guide anywhere for Dynamic DNS?  Basically I'm 
looking for information about how folks have rolled out Dynamic DNS in a 
large ISP like environment (University).

Are there tools to take the place of the "edit config"->"rndc reload" 
cycle for non dynamic changes or is everything pushed through scripts to 
be dynamic?

Or have folks moved to a database backend on a hidden master?  If so 
what database?  LDAP?

Is the LDAP sdb stuff even viable anymore, as the bind9-ldap.bayour.com 
site doesn't resolve any more.  (probably not relevant to this list, but 
maybe someone would know).

And does any of the database backend stuff integrate with DNSSec?

Or is there a DNS list for just ISPs/HigherED that google has yet to 
show me?

Thanks for any pointers.


-- 
Jeff