PTR - A new record cannot be created. The IP address is invalid

Trying to add a new PTR record on a new reverse lookup zone and get this error message.

The IP do exists in the domain as a A record so I dont understand why this does not work.

The server is a 2008 R2 Standard, x64 with computername ns1 and workgroup, could that be the problem?
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piyushranusriSystem Cloud SpecialistCommented:
Please go through this

and one thing more very interesting did you un-check the  IPV6 network configuration.
same side HOst IP address and FQDn is showing ????
Krzysztof PytkoSenior Active Directory EngineerCommented:
Do you have existing reverse lookup zone for this subnet ? You cannot add PTR record when reverse lookup zone does not exist.

Create it first, and you will be able to create PTR record

piyushranusriSystem Cloud SpecialistCommented:
did you try to add run as administrator command.
will really helpfull if you share the scree shot on skydrive.
what happen if you run nslookup
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cynkanAuthor Commented:
Strange, I attached a screen shot in my question but its not there now.

Check this out.!132
David Johnson, CD, MVPOwnerCommented:
this is an invalid ip address ==
maybe you meant
cynkanAuthor Commented:

Add PTR by cmd worked fine ;)
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