inaccurate information on DHCP option "Always dynamically update DNS A and PTR records"

Discussion in 'DNS Server' started by Keith L. Schneider, Feb 10, 2006.

  1. After much testing and head-scratching, I've come to the conclusion that all
    the documentation (both Microsoft and third party) is greatly misleading
    regarding the radio button in Windows 2003 DHCP to "Always dynamically
    update DNS A and PTR records".

    I expected that when selected, that this would have all DHCP clients of the
    server to register both their A records and PTR records in DNS. DHCP option
    15 is set for the correct domain name, and DHCP option 6 lists the Windows
    2003 DNS servers. The DHCP server is a member of the DNSUpdateProxy group
    and I even added credentials to the DHCP server. (Note DNS and DHCP are not
    on the same servers, not that it really matters in my situation.)

    DHCP scopes configured to:
    Enable DNS dynamic updates according to the settings below
    Always dynamically update DNS A and PTR records
    Discard A and PTR records when lease is deleted

    The results of all this? XP and 2000 Clients only register their PTR
    records. Why? They don't have the option to register their connections in
    DNS selected on each XP and 2000 client? But why should they, I'm telling
    DHCP to do it?

    Anyway, I fixed it by checking the option on the DHCP server to "Dynamically
    update DNS A and PTR records for DHCP clients that do not request updates
    (for example, clients running Windows NT 4.0). I realise this is supposed
    to be enabled by default, or that I could script it (although all the WMI
    scripts I saw wouldn't work without SP2 on XP).

    No offense, but all the verbage in the interface and in the documentation
    I've seen is a bit misleading on how all this should work.
    Keith L. Schneider, Feb 10, 2006
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  2. Can anyone confirm or deny this?
    Keith L. Schneider, Feb 20, 2006
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