When setting up a license server on a Mac, the typically rule has been to always use the primary Ethernet card and it will not use an Airport card. We have had some instances when setting up a license server that it will actually use the Airport card and it has been only on the Mac Mini (Late 2009).
Please request a new license based on the Airport card to resolve this issue:
To setup and configure a mac license server for Maya 2012, you can check out this forum post for details:
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