Voilà avant :
Aug 26 21:29:47 ubnt dhcp6c[23702]: dhcp6_reset_timer: reset a timer on eth5.832, state=SOLICIT, timeo=0, retrans=1068
Aug 26 21:29:48 ubnt kernel: ICMPv6: RA: ndisc_router_discovery failed to add default route
Aug 26 21:29:48 ubnt dhcp6c[23702]: copy_option: set client ID (len 14)
Aug 26 21:26:23 ubnt ntpd[22211]: bind(29) AF_INET6 2a01:cb11:802:e400::1#123 flags 0x11 failed: Cannot assign requested address
Aug 26 21:26:23 ubnt ntpd[22211]: unable to create socket on eth0 (10) for 2a01:cb11:802:e400::1#123
Aug 26 21:26:23 ubnt ntpd[22211]: failed to init interface for address 2a01:cb11:802:e400::1
Aug 26 21:26:24 ubnt dhcp6c[22288]: copy_option: set client ID (len 14)
Après quelques changements :
- modification de la MAC de l'interface eth5.832
- fichier de configuration dhclient6 (modificatino de l'adresse MAC)
- delete dhcpv6-pd duid dhclient6 (echo >/var/run/dhclient6_eth5_832.leases)
- suppression configuration EdgeOS (via configure) de la configuration DHCPv6-PD de l'interface eth5.832 (WAN)
- reset configuration eth0 (LAN)
ubnt@ubnt:~$ show ipv6 neighbors
fe80::ba0:bab dev eth5.832 lladdr 20:e0:9c:27:41:66 router REACHABLE
Aug 26 22:03:23 ubnt systemd[1]: Starting dhclient for sending DUID IPv6...
Aug 26 22:03:23 ubnt dhclient[28173]: Internet Systems Consortium DHCP Client 4.1-ESV-R15-P1
Aug 26 22:03:23 ubnt dhclient[28173]: Copyright 2004-2018 Internet Systems Consortium.
Aug 26 22:03:23 ubnt dhclient[28173]: Internet Systems Consortium DHCP Client 4.1-ESV-R15-P1
Aug 26 22:03:23 ubnt dhclient[28173]: Copyright 2004-2018 Internet Systems Consortium.
Aug 26 22:03:23 ubnt dhclient[28173]: All rights reserved.
Aug 26 22:03:23 ubnt dhclient[28173]: For info, please visit https://www.isc.org/software/dhcp/
Aug 26 22:03:23 ubnt dhclient[28173]: All rights reserved.
Aug 26 22:03:23 ubnt dhclient[28173]: For info, please visit https://www.isc.org/software/dhcp/
Aug 26 22:03:23 ubnt dhclient[28173]:
Aug 26 22:03:23 ubnt dhclient[28173]: Listening on Socket/eth5.832
Aug 26 22:03:23 ubnt dhclient[28173]: Sending on Socket/eth5.832
Aug 26 22:03:23 ubnt dhclient[28173]: PRC: Soliciting for leases (INIT).
Aug 26 22:03:23 ubnt systemd[1]: Started dhclient for sending DUID IPv6.
Aug 26 22:03:23 ubnt dhclient[28180]: XMT: Solicit on eth5.832, interval 1050ms.
Aug 26 22:03:23 ubnt dhclient[28180]: RCV: Advertise message on eth5.832 from fe80::ba0:bab.
Aug 26 22:03:23 ubnt dhclient[28180]: XMT: Request on eth5.832, interval 970ms.
Aug 26 22:03:23 ubnt dhclient[28180]: RCV: Reply message on eth5.832 from fe80::ba0:bab.
J'ai maitenant :
1) à partir du routeur :
ubnt@ubnt:~$ sudo -i ping6 www.google.com
ping: www.google.com: Temporary failure in name resolution
2) à partir d'un PC :
C:\Users\admin>ping -6 www.google.com -n 1
Pinging www.google.com [2a00:1450:400e:809::2004] with 32 bytes of data:
Reply from 2a00:1450:400e:809::2004: time=24ms
Ping statistics for 2a00:1450:400e:809::2004:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 24ms, Maximum = 24ms, Average = 24ms
Bonne nouvelle donc ! IPv6 est de retour. Apparemment, dhcp6c a disparu des processus en cours de fonctionnement sur le routeur. Il reste le problème de ping à partir du routeur (j'ai testé plusieurs interfaces pour le ping, mais rien n'y fait...). C'est peut-être lié à dhcp6c aussi !