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Status: Verified (1)

RFC 8666, "OSPFv3 Extensions for Segment Routing", December 2019

Errata ID: 8319
Status: Verified
Type: Editorial
Publication Format(s) : TEXT, PDF, HTML
Reported By: Mohamed BOUCADAIR
Date Reported: 2025-03-02
Verifier Name: Jim Guichard
Date Verified: 2025-03-07

Section 6 says:

   Example 1: If the following router addresses (loopback addresses)
   need to be mapped into the corresponding Prefix-SID indexes:

             Router-A: 2001:DB8::1/128, Prefix-SID: Index 1
             Router-B: 2001:DB8::2/128, Prefix-SID: Index 2
             Router-C: 2001:DB8::3/128, Prefix-SID: Index 3
             Router-D: 2001:DB8::4/128, Prefix-SID: Index 4

   then the Address Prefix field in the OSPFv3 Extended Prefix Range TLV
   would be set to 2001:DB8::1, the Prefix Length would be set to 128,
   the Range Size would be set to 4, and the Index value in the Prefix-
   SID sub-TLV would be set to 1.

   Example 2: If the following prefixes need to be mapped into the
   corresponding Prefix-SID indexes:

             2001:DB8:1::0/120,   Prefix-SID: Index 51
             2001:DB8:1::100/120, Prefix-SID: Index 52
             2001:DB8:1::200/120, Prefix-SID: Index 53
             2001:DB8:1::300/120, Prefix-SID: Index 54
             2001:DB8:1::400/120, Prefix-SID: Index 55
             2001:DB8:1::500/120, Prefix-SID: Index 56
             2001:DB8:1::600/120, Prefix-SID: Index 57

   then the Prefix field in the OSPFv3 Extended Prefix Range TLV would
   be set to 2001:DB8:1::0, the Prefix Length would be set to 120, the
   Range Size would be set to 7, and the Index value in the Prefix-SID
   sub-TLV would be set to 51.

It should say:

   Example 1: If the following router addresses (loopback addresses)
   need to be mapped into the corresponding Prefix-SID indexes:

             Router-A: 2001:db8::1/128, Prefix-SID: Index 1
             Router-B: 2001:db8::2/128, Prefix-SID: Index 2
             Router-C: 2001:db8::3/128, Prefix-SID: Index 3
             Router-D: 2001:db8::4/128, Prefix-SID: Index 4

   then the Address Prefix field in the OSPFv3 Extended Prefix Range TLV
   would be set to 2001:db8::1, the Prefix Length would be set to 128,
   the Range Size would be set to 4, and the Index value in the Prefix-
   SID sub-TLV would be set to 1.

   Example 2: If the following prefixes need to be mapped into the
   corresponding Prefix-SID indexes:

             2001:db8:1::0/120,   Prefix-SID: Index 51
             2001:db8:1::100/120, Prefix-SID: Index 52
             2001:db8:1::200/120, Prefix-SID: Index 53
             2001:db8:1::300/120, Prefix-SID: Index 54
             2001:db8:1::400/120, Prefix-SID: Index 55
             2001:db8:1::500/120, Prefix-SID: Index 56
             2001:db8:1::600/120, Prefix-SID: Index 57

   then the Prefix field in the OSPFv3 Extended Prefix Range TLV would
   be set to 2001:DB8:1::0, the Prefix Length would be set to 120, the
   Range Size would be set to 7, and the Index value in the Prefix-SID
   sub-TLV would be set to 51.

Notes:

The OLD does not follow this recommendation from rfc5952#section-4.3

The characters "a", "b", "c", "d", "e", and "f" in an IPv6 address
MUST be represented in lowercase.

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