AD doesn’t like servers on secondary IP’s

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    APJ
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    #143467

    Hi,
    we are changing (correcting) IP address range in our AD domain. We currently have all Servers and PC’s in the range 142.1.10.xxx,2552552550 (yes I know!!) so I’m moving everything to a new address range of 10.0.0.xxx 2552552480 (ie 10.0.0-7.xxx) (all internal of course)
    I have added say 10.0.0.7 as a secondary IP address on AD server(2003sp2) (so it still has 142.1.10.7 as the primary IP for the sake of all the other clients for now!) and my PC is 10.0.0.1(XPprosp3)….. I can ping 10.0.0.7 fine, and server can ping 10.0.0.1 fine.. but can’t join the domain (a domain controller for the domain ABC could not be contacted) I have reverse entries in the AD’s DNS for each range eg:10.0.0, 10.0.1, 10.0.2 and so on.
    What else needs to be done before AD will accept my PC to it’s domain?
    IF I change my pc to 142.1.10.1, and DNS to 142.1.10.7, allows me to join no probs, DNS 142.1.10.7 and PC 142.1.10.1 as secondary IP – no go.
    seems that AD will only allow a PC to join if on the 142.1.10.xxx network and only if it’s a primary address. intend dropping 142.1.10.xxx off all together once everyone is over..
    Don’t want to change the AD server to 10.0.0.7 as the primary address just yet for fear of breaking usage? if I do this for testing overnight? can I change it back without AD issues following it?
    any perls of wisdom would help..
    thanks
    AJ

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