The value of this object determines the mode used by the CM for IP provisioning. If set to the default value of mdd(0), the CM will comply with the DOCSIS 3.0 specification and use the mode identified in the IP provisioning mode field of the MDD message received from the CMTS. If set to any other value, the CM will ignore the IP provisioning mode field of the MDD message and use the mode specified by this object instead. If the DOCSIS config file contains a TLV which changes the value of this object from its current value, the CM will abandon its current IP settings and restart the IP provisioning and registration process using the new mode. Setting this object using SNMP does not cause a restart; in the case of an SNMP set, the new mode will take effect the next time the CM registers with a CMTS. Note that this object may also be used to invoke IPv6 or dual-stack operation when using a pre-DOCSIS 3.0 CMTS, provided the network hosting the CM is IPv6 capable. Further note that a CM which does not support IPv6 will always report ipV4Only(1) for this object, and an attempt to set the object to any other value will be rejected with an inconsistentValue error. If this object is set to a value which is incompatible with the capabilities of the associated CMTS or network, then IP provisioning may fail. This setting is persistent across reboots.