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ARD remembering old IP addresses instead of using DNS names

885 Views 7 Replies Latest reply: Feb 26, 2013 1:47 PM by Bruce Carter1 RSS
Bruce Carter1 Level 1 Level 1 (0 points)
Currently Being Moderated
Mar 12, 2012 12:03 PM

Greetings all,


We have a DHCP/DNS administration system (InfoBlox Grid Manager) that dynamically assigns IP addresses to our lab computers.  This system does not guarantee that the same IP address will be issued to the same machine, although it does guarantee that the assigned DNS name will always be attached to that machine.  The problem I am running into is in using ARD from my admin system, it frequently ends up with stale IP addresses, and thus causes those machines to show up as offline.  If I use Network Utility to find the actual current IP address, edit the individual entry in the ARD list to add the correct IP address, and then close that dialog, the unit then comes up blue like it should.


All of these systems were entered by using their DNS names, but ARD (or something) seems to be caching the IP addresses, which then go stale.  Is there any way to force ARD to use only the DNS name and do a fresh lookup every time?

  • TeenTitan Level 4 Level 4 (2,410 points)

    I find if I remove the IP address from a computer record. ARD will try to locate the computer the value in the dns name field. So I don't ushally look up the new IP. I just delete the old IP. You considering trying ot use automator or applescript to mass purge the IP address field?


    I take it you don't have a bonjour domain and or can't just use bonjour computer name?

  • TeenTitan Level 4 Level 4 (2,410 points)

    Well mac os x supports multiple vlans... but it's slow to setup.. a little sensitive..


    Have you considered adding every vlan to your ARD computer? that way, bonjour discovery would work for all computers vlans?


    It was abit of a pain to setup. I had to trunk the port on the switch and then I had to add the vlans one at a time. If I tried to add multiple vlans at the same time the OS would crash. Even then there are times I would have to reboot with the network jack unplluged, so the computer will not crash, but it allowed me to have bonjour discovery for all the computers on the network.


    Another option would be to try refreshing the record by network range scan. If you're lucky and your network ranges are back to back, then so you might be able to scan the whole network with one range scan in ARD. ( Assuming your network dosen't block network range scans. But if it dose, maybe your network manager can allow your computer to do so )

    Or for faster re-fresh, you could try scanning a specific smaller range.


    A mac os x server could host a bonjour sub domain for your network. The idea is some what compareable to infobox grid. This is some thing i've been wanting to tes, to see if it's another solution for mulitple vlans. I just haven't had a chance to test it.

  • TeenTitan Level 4 Level 4 (2,410 points)

    Oh there is also one other option. It's not really ARD. But you could just make a folder. And in the folder, put vnc bookmarks for every computer in said folder. You don't have all the features of ARD. But if you just need to remote in, it is an option.

  • Juan Danger Calculating status...

    I know I'm a year late, but I had the same issue. I tried everything suggested here and nothing worked. Then I realized that I was on a different subnet than the computers I was trying manage. The computers were on a student wireless network, while I was on the staff wireless network. I could reach the computers via IP, but like you said, the IP would go stale due to DHCP after the lease is up. When I moved over to the student subnet, I just went to the scanner and they were all there. This is probably something you've already checked, but it's worth a shot!


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