Ca fait quelques mois que nous avons un abonnement cable chez FTCable. Ma connexion est partagé sur nos deux machines par une machine sous Freesco (micro-distrib Linux) PPPoE édition qui me sert de routeur firewall. Ca marche au poil. Tellement au poil que si ce n'était en regardant les logs d'activité, je n'aurais pas remarqué ce phénomène particulièrement perturbant. A interval pas du tout régulier, ma connexion saute. Et ce, plusieurs fois par jour, comme le log suivant peut vous montrer

QUOTE

Mar 31 06:32:11 - pppoe[349]: PADS: Service-Name: '' Mar 31 06:32:11 - pppoe[349]: PPP session is 10180 Mar 31 06:32:43 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:32:43 - pppd[134]: CHAP authentication failed Mar 31 06:32:43 - pppd[134]: LCP terminated by peer Mar 31 06:32:46 - pppd[134]: Connection terminated. Mar 31 06:33:16 - pppoe[417]: PADS: Service-Name: '' Mar 31 06:33:16 - pppoe[417]: PPP session is 10200 Mar 31 06:33:48 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:33:48 - pppd[134]: CHAP authentication failed Mar 31 06:33:48 - pppd[134]: LCP terminated by peer Mar 31 06:33:51 - pppd[134]: Connection terminated. Mar 31 06:34:21 - pppoe[485]: PADS: Service-Name: '' Mar 31 06:34:21 - pppoe[485]: PPP session is 10227 Mar 31 06:34:53 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:34:53 - pppd[134]: CHAP authentication failed Mar 31 06:34:53 - pppd[134]: LCP terminated by peer Mar 31 06:34:53 - pppd[134]: Modem hangup Mar 31 06:34:53 - pppd[134]: Connection terminated. Mar 31 06:34:53 - pppoe[485]: Session terminated -- received PADT from peer Mar 31 06:35:23 - pppoe[543]: PADS: Service-Name: '' Mar 31 06:35:23 - pppoe[543]: PPP session is 10265 Mar 31 06:35:55 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:35:55 - pppd[134]: CHAP authentication failed Mar 31 06:35:55 - pppd[134]: LCP terminated by peer Mar 31 06:35:58 - pppd[134]: Connection terminated. Mar 31 06:36:28 - pppoe[608]: PADS: Service-Name: '' Mar 31 06:36:28 - pppoe[608]: PPP session is 10302 Mar 31 06:37:00 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:37:00 - pppd[134]: CHAP authentication failed Mar 31 06:37:00 - pppd[134]: LCP terminated by peer Mar 31 06:37:03 - pppd[134]: Connection terminated. Mar 31 06:37:33 - pppoe[698]: PADS: Service-Name: '' Mar 31 06:37:33 - pppoe[698]: PPP session is 10352 Mar 31 06:38:05 - pppd[134]: Remote message: Failed to connect to RADIUS server. Mar 31 06:38:05 - pppd[134]: CHAP authentication failed Mar 31 06:38:05 - pppd[134]: LCP terminated by peer Mar 31 06:38:08 - pppd[134]: Connection terminated. Mar 31 06:38:38 - pppoe[754]: PADS: Service-Name: '' Mar 31 06:38:38 - pppoe[754]: PPP session is 10385 Mar 31 06:38:41 - pppd[134]: Remote message: CHAP authentication success, unit 240 Mar 31 06:38:41 - pppd[134]: local  IP address 462.462.462.462 Mar 31 06:38:41 - pppd[134]: remote IP address 462.462.462.462 Mar 31 08:09:09 - pppoe[754]: Session terminated -- received PADT from peer Mar 31 08:09:09 - pppd[134]: Modem hangup Mar 31 08:09:09 - pppd[134]: Connection terminated. Mar 31 08:09:09 - pppd[134]: Connect time 90.6 minutes. Mar 31 08:09:10 - pppoe[2967]: PADS: Service-Name: '' Mar 31 08:09:10 - pppoe[2967]: PPP session is 10981 Mar 31 08:09:12 - pppd[134]: Remote message: CHAP authentication success, unit 261 Mar 31 08:09:12 - pppd[134]: local  IP address 462.462.462.462 Mar 31 08:09:12 - pppd[134]: remote IP address 462.462.462.462 Mar 31 14:44:59 - pppoe[2967]: Session terminated -- received PADT from peer Mar 31 14:44:59 - pppd[134]: Modem hangup Mar 31 14:44:59 - pppd[134]: Connection terminated. Mar 31 14:44:59 - pppd[134]: Connect time 395.9 minutes. Mar 31 14:44:59 - pppoe[12417]: PADS: Service-Name: '' Mar 31 14:44:59 - pppoe[12417]: PPP session is 13981 Mar 31 14:45:02 - pppd[134]: Remote message: CHAP authentication success, unit 261 Mar 31 14:45:02 - pppd[134]: local  IP address 462.462.462.462 Mar 31 14:45:02 - pppd[134]: remote IP address 462.462.462.462 Mar 31 15:35:36 - pppoe[12417]: Session terminated -- received PADT from peer Mar 31 15:35:36 - pppd[134]: Modem hangup Mar 31 15:35:36 - pppd[134]: Connection terminated. Mar 31 15:35:36 - pppd[134]: Connect time 50.7 minutes. Mar 31 15:35:36 - pppoe[13627]: PADS: Service-Name: '' Mar 31 15:35:36 - pppoe[13627]: PPP session is 14573 Mar 31 15:35:38 - pppd[134]: Remote message: CHAP authentication success, unit 233 Mar 31 15:35:38 - pppd[134]: local  IP address 462.462.462.462 Mar 31 15:35:38 - pppd[134]: remote IP address 462.462.462.462

Dans la RFC2516, on peut lire ça:

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The PPPoE Active Discovery Terminate (PADT) packet   This packet may be sent anytime after a session is established to   indicate that a PPPoE session has been terminated.  It may be sent by   either the Host or the Access Concentrator.  The DESTINATION_ADDR   field is a unicast Ethernet address, the CODE field is set to 0xa7   and the SESSION_ID MUST be set to indicate which session is to be   terminated.  No TAGs are required.   When a PADT is received, no further PPP traffic is allowed to be sent   using that session.  Even normal PPP termination packets MUST NOT be   sent after sending or receiving a PADT.  A PPP peer SHOULD use the   PPP protocol itself to bring down a PPPoE session, but the PADT MAY   be used when PPP can not be used.

Donc...si j'ai bien compris...c'est mon FAI qui met un terme à ma connexion. Bien bien bien...pourquoi?
Quelqu'un a-t-il le même problème? Mercredi, avec un log sur 3 jours d'activité, je comptes envoyer un mail au service technique de Wanadoo pour leur demander de quoi il retourne.