Caídas de conexión ADSL - D-Link 2750U

Así que últimamente he tenido problemas importantes con mi ISP sobre mi conexión.

Mi enrutador D-Link 2750U informa la siguiente atenuación:

+------------------+------------+-----------+
| Attenuation (dB) | Downstream | Upstream  |
+------------------+------------+-----------+
|                  |        365 |       183 |
+------------------+------------+-----------+

Mi ISP dice que esto es falso y que la atenuación en mi línea es de ~ 18dB (estoy a 27 km de mi intercambio de Internet, lo que significa una atenuación de alrededor de 37.5dB o eso me dicen).

La siguiente es una transcripción del registro en mi enrutador de la última hora:

May 24 17:27:44 user    crit    kernel: Line 0: ADSL link down
May 24 17:27:44 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = DOWN, Service Support = ATM
May 24 17:27:44 user    warn    kernel: bcmxtmcfg: Connection DOWN, LinkActiveStatus=0x0
May 24 17:27:45 user    crit    kernel: Line 0: xDSL G.994 training
May 24 17:27:55 user    crit    kernel: Line 0: ADSL G.992 started
May 24 17:27:59 user    crit    kernel: Line 0: ADSL G.992 channel analysis
May 24 17:28:04 user    crit    kernel: Line 0: ADSL link down
May 24 17:28:05 user    info    kernel: device atm0.1 left promiscuous mode
May 24 17:28:05 user    info    kernel: device atm0 left promiscuous mode
May 24 17:28:05 user    info    kernel: br0: port 6(atm0.1) entering disabled state
May 24 17:28:06 daemon  crit    syslog: Clear IP addresses. Connection DOWN.
May 24 17:28:06 daemon  crit    syslog: Clear IP addresses. PPP connection DOWN.
May 24 17:28:10 user    crit    kernel: Line 0: xDSL G.994 training
May 24 17:28:19 user    crit    kernel: Line 0: ADSL G.992 started
May 24 17:28:24 user    crit    kernel: Line 0: ADSL G.992 channel analysis
May 24 17:28:28 user    crit    kernel: Line 0: ADSL G.992 message exchange
May 24 17:28:29 user    crit    kernel: Line 0: ADSL link up, Bearer 0, us=507, ds=4096
May 24 17:28:29 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = UP, Service Support = ATM
May 24 17:28:29 user    warn    kernel: bcmxtmrt: MAC address: cc b2 55 45 e5 c4
May 24 17:28:29 user    warn    kernel: [DoCreateDeviceReq.2367]: register_netdev
May 24 17:28:29 user    warn    kernel: [DoCreateDeviceReq.2369]: register_netdev done
May 24 17:28:29 user    warn    kernel: bcmxtmcfg: Connection UP, LinkActiveStatus=0x1, US=507000, DS=4096000
May 24 17:28:29 user    warn    kernel: BCMVLAN : atm0 mode was set to RG
May 24 17:28:29 user    warn    kernel: [ERROR vlan] bcmVlan_insertTagRule,1602: Invalid Number of Tags: 2 (max 2)
May 24 17:28:29 user    warn    kernel: [ERROR vlan] vlanIoctl ,530: Failed to Insert Tag Rule in atm0 (tags=2, dir=0)
May 24 17:28:29 user    info    kernel: device atm0.1 entered promiscuous mode
May 24 17:28:29 user    info    kernel: device atm0 entered promiscuous mode
May 24 17:28:29 daemon  notice  syslog: pppd 2.4.1 started by admin, uid 0
May 24 17:28:29 user    info    kernel: br0: port 6(atm0.1) entering forwarding state
May 24 17:28:30 daemon  notice  syslog: PPP: Start to connect ...
May 24 17:28:56 daemon  notice  syslog: PPP: Start to connect ...
May 24 17:28:57 daemon  crit    syslog: PPP server detected.
May 24 17:28:57 daemon  crit    syslog: PPP session established.
May 24 17:28:58 user    warn    kernel: wp1=3c wp2=00
May 24 17:28:58 user    warn    kernel: e126wp1=00 wp2=3c
May 24 17:28:58 daemon  crit    syslog: PPP LCP UP.
May 24 17:28:59 daemon  crit    syslog: Received valid IP address from server. Connection UP.
May 24 17:29:15 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=64.94.18.71 DST=105.228.182.104 LEN=52 TOS=0x10 PREC=0x00 TTL=111 ID=16934 DF PROTO=TCP SPT=61017 DPT=64481 WINDOW=8192 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:29:18 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=195.59.54.103 DST=105.228.182.104 LEN=60 TOS=0x10 PREC=0x00 TTL=55 ID=2661 DF PROTO=TCP SPT=62203 DPT=64446 WINDOW=14600 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:29:19 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=195.59.54.103 DST=105.228.182.104 LEN=60 TOS=0x10 PREC=0x00 TTL=55 ID=2662 DF PROTO=TCP SPT=62203 DPT=64446 WINDOW=14600 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:29:21 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=195.59.54.103 DST=105.228.182.104 LEN=60 TOS=0x10 PREC=0x00 TTL=55 ID=2663 DF PROTO=TCP SPT=62203 DPT=64446 WINDOW=14600 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:37:31 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=87.109.102.146 DST=105.228.182.104 LEN=60 TOS=0x10 PREC=0x00 TTL=42 ID=49921 DF PROTO=TCP SPT=1449 DPT=80 WINDOW=5840 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:39:24 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=213.114.250.165 DST=105.228.182.104 LEN=52 TOS=0x10 PREC=0x00 TTL=108 ID=29039 DF PROTO=TCP SPT=58156 DPT=80 WINDOW=8192 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:52:27 user    alert   kernel: Intrusion -> IN=ppp0.1 OUT= MAC= SRC=27.254.41.97 DST=105.228.182.104 LEN=48 TOS=0x10 PREC=0x00 TTL=113 ID=24755 DF PROTO=TCP SPT=4123 DPT=445 WINDOW=65535 RES=0x00 SYN URGP=0 MARK=0x8000000
May 24 17:56:33 user    crit    kernel: Line 0: ADSL link down
May 24 17:56:33 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = DOWN, Service Support = ATM
May 24 17:56:33 user    warn    kernel: bcmxtmcfg: Connection DOWN, LinkActiveStatus=0x0
May 24 17:56:35 user    crit    kernel: Line 0: xDSL G.994 training
May 24 17:56:44 user    crit    kernel: Line 0: ADSL G.992 started
May 24 17:56:48 user    info    kernel: device atm0.1 left promiscuous mode
May 24 17:56:48 user    info    kernel: device atm0 left promiscuous mode
May 24 17:56:48 user    info    kernel: br0: port 6(atm0.1) entering disabled state
May 24 17:56:49 daemon  crit    syslog: Clear IP addresses. Connection DOWN.
May 24 17:56:49 daemon  crit    syslog: Clear IP addresses. PPP connection DOWN.
May 24 17:56:49 user    crit    kernel: Line 0: ADSL G.992 channel analysis
May 24 17:56:53 user    crit    kernel: Line 0: ADSL G.992 message exchange
May 24 17:56:53 user    crit    kernel: Line 0: ADSL link up, Bearer 0, us=1087, ds=4160
May 24 17:56:53 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = UP, Service Support = ATM
May 24 17:56:53 user    warn    kernel: bcmxtmcfg: Connection UP, LinkActiveStatus=0x1, US=1087000, DS=4160000
May 24 17:56:56 user    warn    kernel: bcmxtmcfg: Connection DOWN, LinkActiveStatus=0x0
May 24 17:56:56 user    warn    kernel: bcmxtmrt: MAC address: cc b2 55 45 e5 c4
May 24 17:56:56 user    warn    kernel: [DoCreateDeviceReq.2367]: register_netdev
May 24 17:56:56 user    warn    kernel: [DoCreateDeviceReq.2369]: register_netdev done
May 24 17:56:56 user    warn    kernel: bcmxtmcfg: Connection UP, LinkActiveStatus=0x1, US=1087000, DS=4160000
May 24 17:56:56 user    warn    kernel: BCMVLAN : atm0 mode was set to RG
May 24 17:56:56 user    warn    kernel: [ERROR vlan] bcmVlan_insertTagRule,1602: Invalid Number of Tags: 2 (max 2)
May 24 17:56:56 user    warn    kernel: [ERROR vlan] vlanIoctl ,530: Failed to Insert Tag Rule in atm0 (tags=2, dir=0)
May 24 17:56:57 daemon  notice  syslog: pppd 2.4.1 started by admin, uid 0
May 24 17:56:57 user    info    kernel: device atm0.1 entered promiscuous mode
May 24 17:56:57 user    info    kernel: device atm0 entered promiscuous mode
May 24 17:56:57 user    info    kernel: br0: port 6(atm0.1) entering forwarding state
May 24 17:56:57 daemon  notice  syslog: PPP: Start to connect ...
May 24 17:57:03 user    crit    kernel: Line 0: ADSL link down
May 24 17:57:03 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = DOWN, Service Support = ATM
May 24 17:57:03 user    warn    kernel: bcmxtmcfg: Connection DOWN, LinkActiveStatus=0x0
May 24 17:57:05 user    crit    kernel: Line 0: xDSL G.994 training
May 24 17:57:06 user    info    kernel: device atm0.1 left promiscuous mode
May 24 17:57:06 user    info    kernel: device atm0 left promiscuous mode
May 24 17:57:06 user    info    kernel: br0: port 6(atm0.1) entering disabled state
May 24 17:57:14 user    crit    kernel: Line 0: ADSL G.992 started
May 24 17:57:19 user    crit    kernel: Line 0: ADSL G.992 channel analysis
May 24 17:57:23 user    crit    kernel: Line 0: ADSL G.992 message exchange
May 24 17:57:23 user    crit    kernel: Line 0: ADSL link up, Bearer 0, us=507, ds=4096
May 24 17:57:23 user    warn    kernel: bcmxtmcfg: XTM Link Information, portid = 0, State = UP, Service Support = ATM
May 24 17:57:24 user    warn    kernel: bcmxtmrt: MAC address: cc b2 55 45 e5 c4
May 24 17:57:24 user    warn    kernel: [DoCreateDeviceReq.2367]: register_netdev
May 24 17:57:24 user    warn    kernel: [DoCreateDeviceReq.2369]: register_netdev done
May 24 17:57:24 user    warn    kernel: bcmxtmcfg: Connection UP, LinkActiveStatus=0x1, US=507000, DS=4096000
May 24 17:57:24 user    warn    kernel: BCMVLAN : atm0 mode was set to RG
May 24 17:57:24 user    warn    kernel: [ERROR vlan] bcmVlan_insertTagRule,1602: Invalid Number of Tags: 2 (max 2)
May 24 17:57:24 user    warn    kernel: [ERROR vlan] vlanIoctl ,530: Failed to Insert Tag Rule in atm0 (tags=2, dir=0)
May 24 17:57:24 user    info    kernel: device atm0.1 entered promiscuous mode
May 24 17:57:24 user    info    kernel: device atm0 entered promiscuous mode
May 24 17:57:24 daemon  notice  syslog: pppd 2.4.1 started by admin, uid 0
May 24 17:57:24 user    info    kernel: br0: port 6(atm0.1) entering forwarding state
May 24 17:57:24 daemon  notice  syslog: PPP: Start to connect ...
May 24 17:57:51 daemon  notice  syslog: PPP: Start to connect ...
May 24 17:57:54 daemon  crit    syslog: PPP server detected.
May 24 17:57:54 daemon  crit    syslog: PPP session established.
May 24 17:57:54 user    warn    kernel: wp1=3c wp2=00
May 24 17:57:54 user    warn    kernel: e126wp1=00 wp2=3c
May 24 17:57:54 daemon  crit    syslog: PPP LCP UP.
May 24 17:57:55 daemon  crit    syslog: Received valid IP address from server. Connection UP.

¿Alguien puede decirme por qué la conexión se cae tan a menudo? No estoy muy seguro de cómo interpretar la información aquí ...