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DNS issue?

    Question

  • I have a new Win 10 Pro laptop for a user. It is in the domain now. I do an ipconfig /all and it shows me it's ip address. From another machine, I can ping it by it's ip address. I can not ping it by name ; it is timing out. If I do an nslookup on the ip address, it shows me the computer name and the correct ip address. If i do an nslookup on the computer name, it shows me the computer name but with a different ip address. If i ping that different ip address, it times out.

    This laptop used to have a name of Comp64. I had to rename it to Comp65.  If i ping comp65, it times out. If I ping comp64, it gives me the correct ip address. I have deleted comp64 from AD. If I do an nslookup ipaddress, it gives me the comp65 name and the correct ip address. If i do an nslookup comp64, it gives me the correct ip address. If i do an nslookup comp65, it gives me the wrong ip address.

    • Edited by JunAlc Tuesday, January 8, 2019 5:12 PM
    Tuesday, January 8, 2019 3:53 PM

All replies

  • Hi,

    Would you please try ipconfig /flushdns command to empty the local DNS cache and then ipconfig /registerdns command to re-register the DNS Resource Records of your computer?

    Regards,

    Zoe



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    Wednesday, January 9, 2019 2:18 AM
  • Hello Zoe,

    I have already tried doing the ipconfig /flushdns and ipconfig /registerdns with no effect.

    Thanks..

    Wednesday, January 9, 2019 3:08 PM
  • Hi,

    Have you tried clearing the cache on the server side? You may find this option on the DNS Manager console.

    Regards,

    Zoe


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    Thursday, January 10, 2019 3:06 AM
  • I can now ping the laptop by both ip address and name. I can do an nslookup by name. I still am not able to do an nslookup by ip address. It say's localhost can not find the ip address: non-existent domain.
    Friday, January 11, 2019 7:32 PM
  • Hi,

    Would you please check to make sure that you have the corresponding PTR record in the Reverse Lookup Zone?

    If you don't see the reverse lookup zone you may have to manually create one and re-register the record.

    Regards,

    Zoe


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    Monday, January 14, 2019 1:51 AM
  • Hi,

     

    Just checking in to see if the information provided was helpful.

    Please let us know if you would like further assistance.

     

    Best Regards,

    Zoe


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    Wednesday, January 16, 2019 2:02 AM
  • I have a corresponding PTR record in the reverse lookup zone.

    Today, I can ping and do an nslookup by ip address.

    Ping by host name times out.

    Nslookup by hostname gives me another ip address(wrong ip address).

    Wednesday, January 16, 2019 10:04 PM
  • if you looking at your dns and review the forweard lookup zone (your domain name) for the following:

    Sort after IP-Address

    - does the wrong ip-address exist twice?

    - what does the timestamp say to the record? (static or in the past couple days?)

    sort after values (hostnames)

    - does the computername exist twice?

    - timestampe?

    did you maybe reused an "old" computername?

    do you have multiple DNS Servers (and the zone replication / transfer does not work propperly?)


    Please remember to mark the replies as answers if they helped.

    Wednesday, January 16, 2019 11:26 PM
  • if you looking at your dns and review the forweard lookup zone (your domain name) for the following:

    Sort after IP-Address

    - does the wrong ip-address exist twice?

    - what does the timestamp say to the record? (static or in the past couple days?)

    sort after values (hostnames)

    - does the computername exist twice?

    - timestampe?

    did you maybe reused an "old" computername?

    do you have multiple DNS Servers (and the zone replication / transfer does not work propperly?)


    Please remember to mark the replies as answers if they helped.

    The laptop I am working on has an ip of 10.10.1.142. Looking at the forward lookup zone, I see 3 machines with this ip address, none of the the laptop I am working on. In the forward lookup zone, the laptop I am working on has an ip on a different subnet.

    The laptop has a different name before. The old name shows the correct ip address. The new name shows it's Ip on a different subnet.

    Thursday, January 17, 2019 3:54 PM
  • Hi,

    Is there a DHCP server in your environment and is DNS dynamic update enabled?

    Please manually delete the wrong records and make sure the following option is checked in your DHCP scope settings.

    You may also would like to enable scavenging on your DNS server so the stale records can be automatically deleted.

    For your reference:

    Don’t be afraid of DNS Scavenging. Just be patient.

    https://blogs.technet.microsoft.com/networking/2008/03/19/dont-be-afraid-of-dns-scavenging-just-be-patient/


    Regards,

    Zoe


    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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    13 hours 15 minutes ago