Dear IPv6 WG list members, IANA hast allocated some new special purpose IPv6 prefixes in the last months [1]. Two have already been allocated before the last RIPE meeting and one has been allocated yesterday. This may need filtering at the network edges. 3fff::/20 -> Documentation Abstract from the the IETF document [2]: "The document describes the reservation of an additional IPv6 address prefix for use in documentation. This update to RFC 3849 expands on the existing 2001:db8::/32 address block with the reservation of an additional, larger prefix. The addition of a /20 allows documented examples to more closely reflect a broader range of realistic, current deployment scenarios and more closely aligns with contemporary allocation models for large networks." 5f00::/16 -> Segment Routing (SRv6) SIDs Abstract from the the IETF document [3]: "The data plane for Segment Routing over IPv6 (SRv6) is built using IPv6 as the underlying forwarding plane. Due to this underlying use of IPv6, Segment Identifiers (SIDs) used by SRv6 can resemble IPv6 addresses and behave like them while exhibiting slightly different behaviors in some situations. This document explores the characteristics of SRv6 SIDs and focuses on the relationship of SRv6 SIDs to the IPv6 Addressing Architecture. This document allocates and makes a dedicated prefix available for SRv6 SIDs." 2001:1::3/128 -> DNS-SD Service Registration Protocol Anycast Address Abstract from the the IETF document [4]: "The Service Registration Protocol for DNS-Based Service Discovery uses the standard DNS Update mechanism to enable DNS-Based Service Discovery using only unicast packets. This makes it possible to deploy DNS Service Discovery without multicast, which greatly improves scalability and improves performance on networks where multicast service is not an optimal choice, particularly IEEE 802.11 (Wi-Fi) and IEEE 802.15.4 networks. DNS-SD Service registration uses public keys and SIG(0) to allow services to defend their registrations." [1] https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-specia... [2] https://datatracker.ietf.org/doc/draft-ietf-v6ops-rfc3849-update/05/ [3] https://datatracker.ietf.org/doc/draft-ietf-6man-sids/06/ [4] https://datatracker.ietf.org/doc/draft-ietf-dnssd-srp/25/ Kind regards Chris