code: function verifyAddress(address) {
    var ifs = os.networkInterfaces();
    var nics = Object.keys(ifs);
    var i, j, match = false;
    nicLoop:
      for (i = 0; i < nics.length; i++) {
        var nic = ifs[nics[i]];
        for (j = 0; j < nic.length; j++) {
          if (nic[j].address === address && !nic[j].internal) {
            match = true;
            break nicLoop;
          }
        }
      }
    return match;
  }
docs: Verify that a provided address is configured on a NIC
  
  @param {String} address The address to verify
  @return {Boolean} True if the address is configured on a NIC