This document defines a new OSPF Router Information (RI) TLV that allows OSPF routers to flood their hostname-to-Router-ID mapping information across an OSPF network to provide a simple and dynamic mechanism for routers running OSPF to learn about symbolic hostnames@ just like for routers running IS-IS. This mechanism is applicable to both OSPFv2 and OSPFv3.
RFC 5642-2009 history
2009RFC 5642-2009 Dynamic Hostname Exchange Mechanism for OSPF