SLAAC prefix deprecation is supported with vRGW. Contrary to generic prefix replacement, vRGW uses radius attribute Framed-IPv6-Prefix to change the prefix in a BRG-level CoA or re-authentication. For PPPoE clients, prefix replacement is performed whenever the SLAAC prefix is signaled via PPPoE changes. See SLAAC for more information about SLAAC prefix deprecation.
When a SLAAC prefix is assigned to a BRG that previously had no prefix, an unsolicited RA is generated for all sessions currently active for that BRG. Data-triggered host creation should be enabled to allow subsequent setup of IPv6 hosts.
SLAAC prefix deprecation is supported for a PPPoE client. Whenever the state of the SLAAC prefix is lost, such as when a PPPoE client goes down, an RA with 0 lifetimes is sent out and no new SLAAC hosts can be set up. Existing hosts remain in the system but are no longer forwarded. When the same SLAAC prefix is reassigned, existing hosts begin forwarding traffic again.