Questions about migrating to DDNS

[Brad Knowles]

At 10:59 AM +0200 2005-09-01, Her, Andre wrote:

>  While the migration, leave the 5000++ users still use the DNS servers
>  they already got from DHCP. local config etc, but configure the old DNS
>  server to forward the request to the new servers.
>  Once the migration is done, change their configuration both manually
>  and trough DHCP.

	The DNS servers they obtain through DHCP (or pre-configured in 
their /etc/resolv.conf, or other client equivalent) should be 
recursive/caching servers, so that the clients can obtain information 
about other machines on the Internet, etc....  DDNS is important on 
authoritative servers, which would be providing information *about* 
the clients, to other machines on the Internet.

	For various reasons (including security), the caching/recursive 
machines and the authoritative machines should be two separate sets 
of systems.  Therefore, you should be able to update the 
authoritative machines to use DDNS, without fear of disruption to the 
caching/recursive machines.

-- 
Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.