name: DHCPv6
full_form: Dynamic Host Configuration Protocol version 6
context: In this case, the P-GW provides the UE with an IPv6 Prefix belonging to the Intranet/ISP addressing space. A dynamic IPv6 address is given using stateless address autoconfiguration. This IPv6 address is used for packet forwarding within the packet domain and for packet forwarding on the Intranet/ISP.
  When a P-GW receives an initial access request (e.g. Create Session Request or Proxy Binding Update) message, the P-GW deduces from local configuration data associated with the APN:
  -	The source of IPv6 Prefixes (P-GW internal prefix pool, or external address allocation server);
  -	Any server(s) to be used for address allocation, authentication and/or protocol configuration options retrieval (e.g. IMS related configuration, see 3GPP TSÂ 24.229Â [47]);
  -	The protocol, i.e. RADIUS, Diameter or DHCPv6, to be used with the server(s);
  -	The communication and security feature needed to communicate with the server(s);
  As an example the P-GW may use one of the following options:
  -	P-GW internal Prefix pool for IPv6 prefixes allocation and no authentication;
  -	P-GW internal Prefix pool for IPv6 prefixes allocation and RADIUS for authentication. The AAA server responds with either an Access-Accept or an Access-Reject to the RADIUS client in the P-GW;
  -	RADIUS for authentication and IPv6 prefix allocation. The AAA server responds with either an Access-Accept or an Access-Reject to the RADIUS client in the P-GW;
  The P-GW includes the PDP Address IE in the the initial access response (e.g. Create Session Response or Proxy Binding Acknowledgement) and return an IPv6 address composed of a Prefix and an Interface-Identifier. The Interface-Identifier may have any value and it does not need to be unique within or across APNs. It shall however not conflict with the Interface-Identifier that the P-GW has selected for its own side of the UE-P-GW link. The Prefix assigned by the P-GW or the external AAA server shall be globally or site-local unique (see the Note in subclause 11.3 of this document regarding the usage of site-local addresses).
  Table 0.a summarizes the IPv6 prefix allocation and parameter configuration use cases between the UE and the P-GW that may lead the P-GW to interwork with the external RADIUS AAA, Diameter AAA and DHCPv6 servers over Sgi reference point. For detailed description of the signalling flows between the UE and the P-GW, see the references in the table. The detailed description of the signalling use cases that may be triggered between the P-GW and the external servers are specified in this document, as referenced in the table.
  Table 0.a : IPv6 prefix allocation and parameter configuration use cases
description: The DHCPv6 protocol may be used by the P-GW for IPv6 prefix allocation and parameter configuration with external servers, such as AAA servers.
explanation: DHCPv6 is a Protocol because it manages address allocation and configuration between network components.
biotag_Context: O,O,O,O,B-Network Function,O,O,B-Device,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-Organization,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Protocol,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Protocol,O,O,O,B-Protocol,O,O,O,B-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,B-Protocol,O,O,O,B-Protocol,O,O,O,B-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,B-Network Function,O,O,B-Protocol,O,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O,O,O,O,B-Protocol,O,O,B-Service,O,B-Protocol,O,O,B-Interface,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O
biotag_Description: O,B-Protocol,O,O,O,O,O,O,B-Network Function,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,B-Service,O