DHCP Static assignment problem

  • on PFSENSE version 2.3.4-RELEASE (amd64)
    built on Wed May 03 15:13:29 CDT 2017
    FreeBSD 10.3-RELEASE-p19

    I experienced a problem with assigning a static IP address for 2 ports on an Intel based server board.

    the Mac addresses are:


    the problem is that PFSense doe snot seem to like 2 Mac addresses that are separated by 1 digit.

    I get the error:
    The following input errors were detected:

    This fully qualified hostname (Hostname + Domainname), IP, MAC address or Client identifier already exists.

    However, if I change everything, IP, Client ID, hostname+domain and leave the MAC, I still get the error.
    IF I move it from D to F or a number, it seems to accept this.

    I can't change the MAC on the system in question, so I was hoping that maybe someone else has seen this and/or there is a fix for this in PFSense ?

    thanks !

  • Just wondering if anyone has seen or knows of a fix ?

    The box I am using has an Intel MB with dual NICs and believe it or not, the MAC addresses are 1 digit apart.

    I want to be able to use both NICs via DHCP and for some reason it does not seem to work via PFSENSE DHCP.


  • Can you locally assign a MAC on one of those interfaces?

  • Would this happen if DHCP has already assigned IP's to these MAC addresses? Check Status > DHCP Leases. If so try deleting the entries automatically created by DHCP with the same MAC addresses.

    Make sure you are assigning static IP's outside of the DHCP IP range.

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