Authors' Addresses

This section preserves the RFC text for Unreachable Prefix Announcement (UPA), including IS-IS and OSPF signaling, U-Flag and UP-Flag semantics, propagation rules, IANA assignments, and security considerations.

Authors' Addresses

   Peter Psenak (editor)
   Cisco Systems
   Pribinova Street 10
   Bratislava 81109
   Slovakia
   Email: [email protected]


   Clarence Filsfils
   Cisco Systems
   Brussels
   Belgium
   Email: [email protected]


   Daniel Voyer
   Cisco Systems
   Email: [email protected]


   Shraddha Hegde
   HPE
   Email: [email protected]


   Gyan Mishra
   Verizon Inc.
   Email: [email protected]