The following errata report has been verified for RFC9568, "Virtual Router Redundancy Protocol (VRRP) Version 3 for IPv4 and IPv6".
-------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid8298 -------------------------------------- Status: Verified Type: Technical Reported by: Quentin Armitage <quen...@armitage.org.uk> Date Reported: 2025-02-17 Verified by: Jim Guichard (IESG) Section: 7.1 Original Text ------------- It MUST verify that the VRID is configured on the receiving interface and the local router is not the IPvX address owner (Priority = 255 (decimal)). If any one of the above checks fails, the receiver MUST discard the packet, SHOULD log the event (subject to rate-limiting), and MAY indicate via network management that an error occurred. Corrected Text -------------- It MUST verify that the VRID is configured on the receiving interface. If any one of the above checks fails, the receiver MUST discard the packet, SHOULD log the event (subject to rate-limiting), and MAY indicate via network management that an error occurred. It SHOULD verify that the local router is not the IPvX address owner (Priority = 255 (decimal)) and log the event (subject to rate-limiting) and MAY indicate via network management that a misconfiguration was detected. Notes ----- Although it is clearly a configuration error, if two (or more) VRRP routers are configured as the address owner for the same VRID, if received VRRP packets are just dropped (as specified in section 7.1), all such routers will remain in Active state, will continue sending VRRP adverts, and will respond to ARP/ND requests. This will make communication with any VIP unachievable, or at best unreliable. If the VRRP packets are not dropped, but processed in the normal way, in section 6.4.3 - "Active", following "If an ADVERTISEMENT is received", then: . If the Priority in the ADVERTISEMENT is greater than the local Priority or the Priority in the ADVERTISEMENT is equal to the local Priority and the primary IPvX address of the sender is greater than the local primary IPvX address (based on an unsigned integer comparison of the IPvX addresses in network byte order), then: ... Transition to the {Backup} state will cause all except one of the VRRP routers to revert to Backup state, and the VRRP instance will be stable. -------------------------------------- RFC9568 (draft-ietf-rtgwg-vrrp-rfc5798bis-18) -------------------------------------- Title : Virtual Router Redundancy Protocol (VRRP) Version 3 for IPv4 and IPv6 Publication Date : April 2024 Author(s) : A. Lindem, A. Dogra Category : PROPOSED STANDARD Source : Routing Area Working Group Stream : IETF Verifying Party : IESG _______________________________________________ rtgwg mailing list -- rtgwg@ietf.org To unsubscribe send an email to rtgwg-le...@ietf.org
