A mi me está preocupando otra cosa.
Desde hace varios dias me viene ocurriendo lo mismo, a determinada hora, el router pierde la ip, mantiene sincronismo y esto es el log:
Fri, 2012-03-23 11:52:58 - [Outgoing] UDP Packet - 192.168.1.140:63880 --> 87.216.1.66:53
Fri, 2012-03-23 11:52:58 - Terminating on signal 15.
Fri, 2012-03-23 11:52:58 - chld,got_sigchld=1
Fri, 2012-03-23 11:52:58 - run_program(/etc/ppp/ip-down)
Fri, 2012-03-23 11:52:58 - ret=15714
Fri, 2012-03-23 11:52:58 - Couldn't increase MTU to 1500.
Fri, 2012-03-23 11:52:58 - Couldn't increase MRU to 1500
Fri, 2012-03-23 11:52:58 - reap_kids,waitfor=0
Fri, 2012-03-23 11:52:58 - Modem hangup
Fri, 2012-03-23 11:52:58 - Connection terminated.
Fri, 2012-03-23 11:52:58 - Connect time 185.3 minutes.
Fri, 2012-03-23 11:52:58 - Sent 2210639563 bytes, received 928236176 bytes.
Fri, 2012-03-23 11:52:58 - Doing disconnect
Fri, 2012-03-23 11:52:58 - sendto returned:
Fri, 2012-03-23 11:52:58 - Exit.
Fri, 2012-03-23 11:53:31 - Plugin pppoe loaded.
Fri, 2012-03-23 11:53:31 - PPPoE Plugin Initialized
Fri, 2012-03-23 11:53:31 - Plugin pppoe called.
Fri, 2012-03-23 11:53:31 - Bad device name: escape (Unknown error 19)
Fri, 2012-03-23 11:53:31 - Bad device name: multilink (Unknown error 19)
Fri, 2012-03-23 11:53:31 - Bad device name: local (Unknown error 19)
Fri, 2012-03-23 11:53:31 - Bad device name: sync (Unknown error 19)
Fri, 2012-03-23 11:53:31 - Bad device name: vj (Unknown error 19)
Fri, 2012-03-23 11:53:31 - pppd 2.4.1 started by root, uid 0
Fri, 2012-03-23 11:53:31 - setting line discipline hook
Fri, 2012-03-23 11:53:31 - Sending PADI
Fri, 2012-03-23 11:53:31 - HOST_UNIQ successful match
Fri, 2012-03-23 11:53:34 - Unexpected packet: Ether addr: 00:25:9e:5f:00:aa (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x0020 (PADO) PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0008 (Host Uniq) data (bin): 88 10 08
Fri, 2012-03-23 11:53:34 - Send PADT for unexpected PADO,ses->remote.sll_addr=00:25:9e:80:a4:cd
Fri, 2012-03-23 12:06:17 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 12:06:17 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 12:06:17 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 12:06:17 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 12:06:17 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 12:26:18 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 12:26:18 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 12:26:18 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 12:26:18 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 12:26:18 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 12:46:19 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 12:46:19 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 12:46:19 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 12:46:19 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 12:46:19 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 13:06:20 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 13:06:20 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 13:06:20 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 13:06:20 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 13:06:20 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 13:26:21 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 13:26:21 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 13:26:21 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 13:26:21 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 13:26:21 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 13:46:22 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 13:46:22 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 13:46:22 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 13:46:22 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 13:46:22 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 14:06:23 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 14:06:23 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 14:06:23 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 14:06:23 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 14:06:23 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 14:26:24 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 14:26:24 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 14:26:24 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 14:26:24 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 14:26:24 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 14:46:25 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 14:46:25 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 14:46:25 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 14:46:25 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 14:46:25 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 15:06:26 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 15:06:26 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 15:06:26 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 15:06:26 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 15:06:26 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 15:26:27 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 15:26:27 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 15:26:27 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 15:26:27 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 15:26:27 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 15:46:28 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 15:46:28 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 15:46:28 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 15:46:28 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 15:46:28 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 16:06:29 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 16:06:29 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 16:06:29 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 16:06:29 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 16:06:29 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 16:26:30 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 16:26:30 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 16:26:30 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 16:26:30 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 16:26:30 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 16:46:31 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 16:46:31 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 16:46:31 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 16:46:31 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 16:46:31 - Failed to get ip address for interface ppp0
Fri, 2012-03-23 17:06:32 - GetGenericPortMappingEntry: index=0
Fri, 2012-03-23 17:06:32 - GetGenericPortMappingEntry: index=1
Fri, 2012-03-23 17:06:32 - GetGenericPortMappingEntry: index=2
Fri, 2012-03-23 17:06:32 - Returning UPnPError 713: SpecifiedArrayIndexInvalid
Fri, 2012-03-23 17:06:32 - Failed to get ip address for interface ppp0
Así, hasta que llego a casa y reinicio el router manualmente....