The mode of OSPFv3 event logging. If the
OSPFv3 log type is set to
neighborAdjacencyChanges, then meaninng of
this field is as follows:
if enabled, it logs only the adjacency
state transitions to final states.
if enabledWithDetail option, it logs all
the state transitions and other events and
error conditions related to adjacency.
if disabled, none of the adjacency related
events are logged.