The OSPF Process's link-local link state database
for virtual links.
This table is identical to the OSPF LSDB Table
in format, but contains only link-local Link State
Advertisements for virtual links. The purpose is to
allow link-local LSAs to be displayed for each virtual
interface. This table is implemented to support type-9 LSAs
that are defined in 'The OSPF Opaque LSA Option'.