7. IANA Considerations

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.

7.  IANA Considerations

7.1.  IS-IS Prefix Attribute Flags Sub-TLV

   This document adds two new bits in the "IS-IS Bit Values for Prefix
   Attribute Flags Sub-TLV" registry:

   Bit #:  5
   Name:  U-Flag
   Reference:  RFC 9929 (Section 3.2)

   Bit #:  6
   Name:  UP-Flag
   Reference:  RFC 9929 (Section 3.2)

7.2.  OSPFv2 and OSPFv3 Prefix Extended Flags

   This document adds two new bits in the "OSPFv2 Prefix Extended Flags"
   and "OSPFv3 Prefix Extended Flags" registries:

   Bit:  0
   Description:  U-Flag
   Reference:  RFC 9929 (Section 4.2)

   Bit:  1
   Description:  UP-Flag
   Reference:  RFC 9929 (Section 4.2)