At what does Win2k register itself into DNS

[Barry Finkel]

Gareth Bromley wrote:

>If you have a number of Win2K machines, with statically allocated IP
>addresses, will Win2K still attempt to register A and PTR records for
>themselves?

I have posted this before, I believe.  A Win2k box, either workstation
or server, will by default try to register itself.  You can turn off
this self-registration via 

    To see what options are set:
    Start
         Settings
               Network and Dialup
                     Local Area
                           Properties
                                Adapter
                                     Protocols
                                          TCP/IP
                                               Advanced
                                                    DNS
    The "Register this name" box should NOT be checked.
    If you need to uncheck the box, then you must reboot for the change
    to take effect.

Once a self-registration has completed successfully, the Win2k box
will attempt another self-registration at these events (according to a
MS web page [the URL of which I will send in a subsequent posting])

    every 24 hours
    when the computer is rebooted
    when the computer's IP configuration changes
    when any plug-and-play event occurs

On our Win2k testbed, I was seeing self-registrations at these intervals
a few days after the one self-registration completed successfully:

      5 minutes
     10 minutes
     60 minutes
      5 minutes ...

I assume that the MS code expects the MS DNS "scavenger" code to be
running; that code might unregister the computer if it is off of the
network.  In my testing, I allowed only ONE sef-registration to succeed;
I wanted to get a trace of the DNS update packets.
----------------------------------------------------------------------
Barry S. Finkel
Electronics and Computing Technologies Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-9689
Building 221, Room B236              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4844             IBMMAIL:  I1004994