The value of tmnxSysDhcp6AdvNoaddrsGlobal specifies the composition of DHCPv6 Advertise Messages in case a DHCP6 application in this system will not assign any addresses to any Identity Association (IA) in a subsequent Request from the client. DHCP6 applications in this system are Relay, Server, Enhanced Subscriber Management (ESM) Proxy and ESM Relay. By default, a DHCP6 application in this system will send an Advertise message to the client that includes the IA containing a Status Code option with status code 'NoAddrsAvail', as specified in Errata 2472. If the bit corresponding to a DHCP6 application is set, that application will send an Advertise message to the client that includes only a Status Code option with code 'NoAddrsAvail'. This system will refuse bit combinations that are not supported: the 'esmRelay' and 'server' bits must be toggled together, and the 'esmProxy' and 'relay' bits are read-only.