The multilink PPP bundle discriminator type associated with a VPDN tunnel. The value of this object represents the type of discriminator used in cvpdnBundleEndpoint. none: No endpoint discriminator was supplied, the default value is being used. hostname: The router's hostname is being used as discriminator. string: User specified string is being used as discriminator. macAddress: A MAC address as defined by the MacAddress textual convention is being used as discriminator. ipV4Address: An IP address as defined by the InetAddressIPv4 textual convention is being used as discriminator. ipV6Address: An IP address as defined by the InetAddressIPv6 textual convention is being used as discriminator. phone: The PSTN phone number is being used as discriminator. magicNumber: A magic number is being used as discriminator.