c589b6fa_pen_Shortest_Path_First__OSPF___Description
[Type #] 8 [LSA Name] External Attributes [Description] 
In OSPFv2, this was used to convey BGP link attributes into an OSPF network, but it was rarely implemented. In OSPFv3, it has been repurposed to send information about all of the IPv6 address information associated with the local link.
Types of link-state advertisements (LSAs) used in Open Shortest Path First (OSPF)
Description