This records the sysUpTime at which this particular local-address entry (one of possibly several addresses this multihomed association can use locally) was added to the association's address list, distinct from cSctpAssocStartTime which times the association as a whole. On a multihomed setup, comparing this against the association's overall start time reveals whether all local addresses were configured from the start or whether one was added dynamically later. A local address entry with a much more recent start time than the association itself indicates that path was added mid-session, relevant context when investigating a later failover event.