docs: public static String getDefaultReplicationInterface() {
          if (m_config.m_drInterface == null || m_config.m_drInterface.isEmpty()) {
              if (m_config.m_externalInterface == null) {
                  return "";
              }
              else {
                  return m_config.m_externalInterface;
              }
          }
          else {
              return m_config.m_drInterface;
          }
      }