Acknowledgements

Questa sezione conserva il testo RFC per Unreachable Prefix Announcement (UPA), inclusi IS-IS and OSPF signaling, U-Flag and UP-Flag semantics, propagation rules, IANA assignments e security considerations.

Acknowledgements

   The authors would like to thank Kamran Raza, Michael MacKenzie, and
   Luay Jalil for their contributions and support of the overall
   solution proposed in this document.