Feature Description
To comply to IPv6 Stateless Auto-configuration, SMF supports ICMPv6 Router Solicit and Advertisement.
The following ICMPv6 options are supported in Router Advertisement:
-
Prefix Information: Allocated UE IPv6 Prefix is sent.
-
MTU: Value is taken from configuration. Default is 1500.
-
Source Link Layer Address: Value is taken from configuration local virtual mac.
In releases prior to 2020.02, the SMF queued the Router Advertisement (RA) and Router Solicitation (RS) messages when the PCF-initiated PDU Modification Request is triggered immediately after the Session Create Request.
In this release, the SMF sends the RA message and also responds to the RS message when the PCF-initiated PDU Modification Request is triggered immediately after the Session Create Request. That is, the SMF prioritizes the processing of RA and RS messages over the PCF-initiated PDU Modification Request.