# File lib/ohai/plugins/darwin/network.rb, line 73
  def locate_interface(ifaces, ifname, mac)
    return ifname unless ifaces[ifname].nil?
    # oh well, time to go hunting!
    return ifname.chop if ifname.match /\*$/
    ifaces.keys.each do |ifc|
      ifaces[ifc][:addresses].keys.each do |addr|
        return ifc if addr.eql? mac
      end
    end

    nil
  end