The value of tmnxOspfRFC1583Compatibility indicates the
metrics used to choose among multiple AS-external-LSAs.
When tmnxOspfRFC1583Compatibility is set to 'true', only cost
will be used when choosing among multiple AS-external-LSAs
advertising the same destination. When tmnxOspfRFC1583Compatibility
is set to 'false', preference will be driven first by the
type of path using cost only to break ties.
This object is valid only when tmnxOspfVersion is 'version2'.