Perte de connection router récurente CGA437AORB

Bonjour, 

Recemment et de manière aléatoire, mon router perds la connexion et un redemarrage ne regle pas le soucis.

Je le remarque recemment mais cela fait peut-être plus longtemps que ça dure.

Depuis le 14/08, mon router perds la connexion, les logs sont comme ci-après :

RouterLog                                                                                           0000644 0000000 0000000 00000014146 15241011225 011420  0                                                                                                    ustar   root                            root                                                                                                                                                                                                                   2026-08-15 14:40:25 local4.crit [72001013]: 18,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 14:40:26 local4.crit [72001013]: 19,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 14:40:26 local4.crit [72001009]: 7,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-15 14:46:00 local4.crit [72001013]: 20,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 16:28:14 local4.crit [72001013]: 21,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 16:36:22 local4.crit [72001013]: 22,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 18:19:24 local4.crit [72001013]: 23,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 18:19:25 local4.crit [72001013]: 24,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 18:19:25 local4.crit [72001009]: 8,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-15 18:36:22 local4.crit [72001013]: 25,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 21:49:48 local4.crit [72001013]: 26,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 21:49:49 local4.crit [72001013]: 27,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 21:49:49 local4.crit [72001009]: 9,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-15 21:53:51 local4.crit [72001013]: 28,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 22:57:43 local4.crit [72001013]: 29,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-15 22:57:43 local4.crit [72001009]: 10,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 03:39:31 local4.crit [72001013]: 30,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 03:39:31 local4.crit [72001009]: 11,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 07:46:46 local4.crit [72001013]: 31,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 07:46:46 local4.crit [72001009]: 12,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 07:50:10 local4.crit [72001013]: 32,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 07:50:10 local4.crit [72001009]: 13,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 08:42:01 local4.crit [72001013]: 33,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 08:42:02 local4.crit [72001013]: 34,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 08:42:02 local4.crit [72001009]: 14,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 16:36:25 local4.crit [72001013]: 35,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 16:36:36 local4.crit [72001013]: 36,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 18:36:36 local4.crit [72001013]: 37,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 21:09:43 local4.crit [72001013]: 38,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 21:09:43 local4.crit [72001009]: 15,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 21:09:55 local4.crit [72001013]: 39,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 21:09:55 local4.crit [72001013]: 40,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-16 21:09:55 local4.crit [72001009]: 16,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-16 21:13:32 local4.crit [72001013]: 41,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 00:06:19 local4.crit [72001013]: 42,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 00:06:19 local4.crit [72001009]: 17,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-17 04:36:38 local4.crit [72001013]: 43,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 06:36:38 local4.crit [72001013]: 44,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 08:39:59 local4.crit [72001013]: 45,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 08:40:00 local4.crit [72001013]: 46,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 08:40:00 local4.crit [72001009]: 18,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-17 09:59:34 local4.crit [72001013]: 47,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 16:36:40 local4.crit [72001013]: 48,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-17 18:36:40 local4.crit [72001013]: 49,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-18 04:36:42 local4.crit [72001013]: 50,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-18 06:36:43 local4.crit [72001013]: 51,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-18 07:50:26 local4.crit [72001013]: 52,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-18 07:50:26 local4.crit [72001009]: 19,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2026-08-18 07:53:42 local4.crit [72001013]: 53,2026-08-14 04:36:15 OFI - ADDRESS released
2026-08-18 07:53:42 local4.crit [72001009]: 20,2026-08-14 11:04:59 OFI - DHCPv6  No Advertise message received
2025-08-14 08:12:43 local4.crit [72002011]: 1,2025-08-14 08:12:43 CFI - LAN Provisioning DHCPv4 No Address available.
2026-08-18 07:17:20 local4.info [72003004]: 1,2026-08-18 07:17:20 eRouter is enabled as Dual Stack
2026-08-18 07:17:20 local4.info [72003004]: 2,2026-08-18 07:17:20 eRouter is enabled as Dual Stack
2026-08-18 07:17:21 local4.info [72003004]: 3,2026-08-18 07:17:20 eRouter is enabled as Dual Stack
2026-08-18 07:17:21 local4.info [72003004]: 4,2026-08-18 07:17:20 eRouter is enabled as Dual Stack
2026-08-18 09:17:49 local4.crit [72001004]: 1,2026-08-18 09:17:49 OFI - DHCPv6 Provisioning -  1 Retries attempted; Last attempt at 2026-08-18 09:17:49
2026-08-18 09:17:51 local4.info [72001001]: 1,2026-08-18 09:17:51 OFI - DHCPv4 Provisioning Complete
2026-08-18 09:17:52 local4.crit [72001004]: 1,2026-08-18 09:17:52 OFI - DHCPv6 Provisioning -  1 Retries attempted; Last attempt at 2026-08-18 09:17:52
2026-08-18 09:17:54 local4.info [72001002]: 1,2026-08-18 09:17:54 OFI - DHCPv6 Provisioning Complete
2026-08-18 09:18:12 local4.crit [72002011]: 1,2026-08-18 09:18:12 CFI - LAN Provisioning DHCPv4 No Address available.
2026-08-18 09:18:13 local4.crit [72002011]: 1,2026-08-18 09:18:13 CFI - LAN Provisioning DHCPv4 No Address available.
2026-08-18 09:18:26 local4.crit [72001013]: 1,2026-08-18 09:18:26 OFI - ADDRESS released
2026-08-18 09:18:26 local4.crit [72001009]: 1,2026-08-18 09:18:26 OFI - DHCPv6  No Advertise message received

Par contre aucune idée de pourquoi les logs ne vont pas plus loin que le 15/08... avec au milieu un log de 2025...

J'ai beau chercher sur le site d'orange, je ne trouve aucun endroit pour demander de l'aide.

Il me reste le 5000 mais je ne suis vraiment pas a l'aise avec l'idée de télephoner.

Une idée ? Réparable ou remplacable ?