The value of tmnxOspfIgnoreDNBit specifies whether to ignore the
DN bit for OSPF LSA packets for this instance of OSPF on the router.
When tmnxOspfIgnoreDNBit has a value of 'true' the DN bit for
OSPF LSA packets will be ignored. When it has a value of 'false'
the DN bit will not be ignored for OSPF LSA packets.