This read-write INTEGER (0-65535, default 1) sets the LACP priority value assigned to a specific link aggregation port, applicable only to dynamic and keepalive LAGs. Since lower LACP priority values are preferred, admins use this to influence which ports are selected as active members when more ports are eligible than the peer can use. For example, an admin sets fdryLinkAggregationGroupPortLacpPriority to 100 on a backup port while leaving preferred ports at the default of 1, so those default ports are chosen first if the LAG has more candidates than active slots.