Section: 3.8 Structure of an IP v6 address
Content: One or more IP address domains could be allocated to each PLMN. The IP v6 address structure is defined in RFC 2373 [15]. An IP v6 address may be allocated to an MS either permanently or temporarily during a connection with the network If the dynamic IPv6 stateless address autoconfiguration procedure is used, then each PDP context, or group of PDP contexts sharing the same IP address, is assigned a unique prefix as defined in 3GPP TS 23.060[ General Packet Radio Service (GPRS); Service description; Stage 2 ]  [3]. As described in RFC 2462 [21] and RFC 3041 [22], the MS can change its interface identifier without the GPRS network being aware of the change.