Preuve que ça fonctionne bien, voici le RA via un tcpdump:
00:00:00.000000 IP6 (flowlabel 0xb93ae, hlim 255, next-header ICMPv6 (58) payload length: 88) fe80::ba8c:2bff:fe09:e14 > ip6-allnodes: [icmp6 sum ok] ICMP6, router advertisement, length 88
hop limit 64, Flags [managed, other stateful ...