Hi, maybe I'm missing something (obvious) but I do not understand why I'm not sending my IPv6 prefix, 2001:43fe:c000::/48, to my upstream (Hurricane Electric) I'm using FRR 8.0.1 on debian 11.1 . I have a 'v4tunnel' set in /etc/network/interfaces.d/local.interfaces . Details in attachment. No advertised-routes to my neighbor :( Excerpt of the BGP session Message statistics: Inq depth is 0 Outq depth is 0 Sent Rcvd Opens: 4 4 Notifications: 4 0 Updates: 0 268961 Keepalives: 1216 4 Route Refresh: 0 0 Capability: 0 0 Total: 1224 268969 Minimum time between advertisement runs is 0 seconds Update source is 2001:470:xxxx::2 For address family: IPv6 Unicast upstream-IPv6 peer-group member Update group 8, subgroup 8 Packet Queue length 0 Community attribute sent to this neighbor(all) Inbound path policy configured Outbound path policy configured Incoming update prefix filter list is *pl-IPv6-IMPORT Outgoing update prefix filter list is *pl-IPv6-EXPORT Route map for incoming advertisements is *rm-rpki 133184 accepted prefixes Maximum allowed prefixes sent 0 Connections established 4; dropped 3 When I look the detail of pl-IPv6-EXPORT, I see 'hit count:2' with BGP but nothing sent to my neighbor. bdr2(config)# do sh ipv6 prefix-list detail pl-IPv6-EXPORT ZEBRA: ipv6 prefix-list pl-IPv6-EXPORT: count: 2, range entries: 0, sequences: 5 - 10 seq 5 permit 2001:43fe:c000::/48 le 48 (hit count: 0, refcount: 0) seq 10 deny any (hit count: 0, refcount: 0) OSPF6: ipv6 prefix-list pl-IPv6-EXPORT: count: 2, range entries: 0, sequences: 5 - 10 seq 5 permit 2001:43fe:c000::/48 le 48 (hit count: 0, refcount: 0) seq 10 deny any (hit count: 0, refcount: 0) BGP: ipv6 prefix-list pl-IPv6-EXPORT: count: 2, range entries: 0, sequences: 5 - 10 seq 5 permit 2001:43fe:c000::/48 le 48 (hit count: 2, refcount: 0) seq 10 deny any (hit count: 7335, refcount: 0) my pl-IPv6-EXPORT contains only two rules: ipv6 prefix-list pl-IPv6-EXPORT seq 5 permit 2001:43fe:c000::/48 le 48 ipv6 prefix-list pl-IPv6-EXPORT seq 10 deny any Any clue ? :) -- Willy Manga @ongolaboy https://ongola.blogspot.com/