Michael Lake

Q: Multiple IP Address Entries Listed for OD Master

My Open Directory server is running well, but I have a question about the first table that shows up in the Open Directory section of the Server app. The Server Name and Type are correct, but the Addresses field has 5 IP addresses listed, two of which I do not recognize and one of which is a duplicate:

od-addresses.jpg

I’ve obfuscated potentially sensitive information, but the first entry is a valid and functioning FQDN for the OD Master. The first and last IP Addresses listed on the right side are actually the same address (this is the address that the FQDN resolves to, and PTR record for this IP resolves to the FQDN). I have no idea why it’s listed twice and I don’t know if I should be concerned about that. Checking the IP returns a green light:

 

$ sudo changeip -checkhostname

dirserv:success = "success"

 

The second address (172.16.32.1) is the IP address for the server’s virtual interface that the VPN Server uses, so that one is expected. The third and fourth entries, however, are unknown to me and I’m not sure where they would come from. Those two addresses are on the private 172.16.0.0/12 block, so they’re un-routable.

 

Is there a way to update or remove these errant addresses from my OD server config? Should I be concerned about them? What about the duplicate entries for the actual IP?

Mac mini, OS X El Capitan (10.11.3), Mid-2011 Server/2.0 GHz i7/16GB

Posted on Feb 10, 2016 9:27 PM

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Q: Multiple IP Address Entries Listed for OD Master

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  • by Michael Lake,

    Michael Lake Michael Lake Feb 11, 2016 1:10 PM in response to Michael Lake
    Level 2 (198 points)
    Windows Software
    Feb 11, 2016 1:10 PM in response to Michael Lake

    Small update: I just tried rebooting the server and the second instance of the “main” IP has disappeared. I still have the two errant 172.16 addresses listed, though.

  • by John Lockwood,Solvedanswer

    John Lockwood John Lockwood Feb 12, 2016 8:07 AM in response to Michael Lake
    Level 6 (9,349 points)
    Servers Enterprise
    Feb 12, 2016 8:07 AM in response to Michael Lake

    It might be worth running ifconfig from the command line in Terminal.app this will list all the network interfaces and their addresses including VLAN interfaces. See is the result includes your mystery IP addresses.

     

    An inactive e.g. disconnected interface will not list an IP address.

  • by Michael Lake,

    Michael Lake Michael Lake Feb 12, 2016 7:34 AM in response to John Lockwood
    Level 2 (198 points)
    Windows Software
    Feb 12, 2016 7:34 AM in response to John Lockwood

    Yup, apparently VMWare had installed some virtual interfaces that weren’t showing up anywhere else on the system. Don’t know why I hadn’t tried ifconfig before. Thanks for the sanity check.