code: public String getEthernetAddress() {
  
          if (m_ethernetAddress == null) {
              String address = getExtProperty("server.ethernet.address");
              m_ethernetAddress = CmsStringUtil.isNotEmpty(address) ? address : CmsStringUtil.getEthernetAddress();
          }
          return m_ethernetAddress;
      }
docs: Returns the mac ethernet address.<p>
  
  @return the mac ethernet addess