У меня модем Dlink 2500U. Пропадает связь с интернетом ( от 30 секунд до 2 минут). Подскажите, пожалуйста, в чем проблема. Вот лог на момент дисконекта.

Jan 1 06:54:11 user crit kernel: ADSL link down
Jan 1 06:54:11 daemon crit pppd[257]: Clear IP addresses. Connection DOWN.
Jan 1 06:54:11 daemon crit pppd[257]: Clear IP addresses. PPP connection DOWN.
Jan 1 06:54:25 user crit kernel: ADSL G.994 training
Jan 1 06:54:35 user crit kernel: ADSL G.992 started
Jan 1 06:54:40 user crit kernel: ADSL G.992 channel analysis
Jan 1 06:54:46 user crit kernel: ADSL G.992 message exchange
Jan 1 06:54:46 user crit kernel: ADSL link up, interleaved, us=1896, ds=10239
Jan 1 06:54:47 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jan 1 06:54:48 daemon notice pppd[257]: PPP: Start to connect ...
Jan 1 06:55:02 daemon notice pppd[257]: PPP: Start to connect ...



А вот лог временем пораньше.

06:40:03 user crit kernel: ADSL link down
Jan 1 06:40:04 daemon crit pppd[257]: Clear IP addresses. Connection DOWN.
Jan 1 06:40:04 daemon crit pppd[257]: Clear IP addresses. PPP connection DOWN.
Jan 1 06:40:11 user crit kernel: ADSL G.994 training
Jan 1 06:40:21 user crit kernel: ADSL G.992 started
Jan 1 06:40:25 user crit kernel: ADSL G.992 channel analysis
Jan 1 06:40:32 user crit kernel: ADSL link down
Jan 1 06:40:34 user crit kernel: ADSL G.994 training
Jan 1 06:40:44 user crit kernel: ADSL G.992 started
Jan 1 06:40:48 user crit kernel: ADSL G.992 channel analysis
Jan 1 06:40:54 user crit kernel: ADSL G.992 message exchange
Jan 1 06:40:54 user crit kernel: ADSL link up, interleaved, us=1925, ds=10239
Jan 1 06:40:55 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jan 1 06:40:56 daemon notice pppd[257]: PPP: Start to connect ...
Jan 1 06:41:10 daemon notice pppd[257]: PPP: Start to connect ...
Jan 1 06:41:10 daemon crit pppd[257]: PPP server detected.
Jan 1 06:41:10 daemon crit pppd[257]: PPP session established.
Jan 1 06:41:10 daemon crit pppd[257]: PPP LCP UP.
Jan 1 06:41:10 daemon crit pppd[257]: Received valid IP address from server. Connection UP.
Jan 1 06:41:10 user debug syslog: route add default gw 195.34.224.47 2>/dev/null
Jan 1 06:41:10 user debug syslog: iptables -A FORWARD -o ppp_35_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jan 1 06:41:10 user debug syslog: iptables -A FORWARD -i ppp_35_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jan 1 06:41:10 user debug syslog: echo > /proc/net/ip_conntrack
Jan 1 06:41:11 user debug syslog: echo "512" > /proc/sys/net/ipv4/ip_conntrack_max
Jan 1 06:41:11 user debug syslog: iptables -t nat -D PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107 2>/dev/null
Jan 1 06:41:11 user debug syslog: iptables -t nat -D POSTROUTING -o ppp_35_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE 2>/dev/null
Jan 1 06:41:11 user debug syslog: iptables -t nat -A POSTROUTING -o ppp_35_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE
Jan 1 06:41:12 user debug syslog: iptables -D INPUT -i ppp_35_33_1 -j DROP
Jan 1 06:41:12 user debug syslog: iptables -A INPUT -i ppp_35_33_1 -j DROP
Jan 1 06:42:50 user crit kernel: ADSL link down
Jan 1 06:42:52 daemon crit pppd[257]: Clear IP addresses. Connection DOWN.
Jan 1 06:42:52 daemon crit pppd[257]: Clear IP addresses. PPP connection DOWN.
Jan 1 06:43:03 user crit kernel: ADSL G.994 training
Jan 1 06:43:14 user crit kernel: ADSL G.992 started
Jan 1 06:43:18 user crit kernel: ADSL G.992 channel analysis
Jan 1 06:43:24 user crit kernel: ADSL G.992 message exchange
Jan 1 06:43:25 user crit kernel: ADSL link up, interleaved, us=1838, ds=10239
Jan 1 06:43:26 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jan 1 06:43:26 daemon notice pppd[257]: PPP: Start to connect ...
Jan 1 06:43:41 daemon notice pppd[257]: PPP: Start to connect ...
Jan 1 06:43:41 daemon crit pppd[257]: PPP server detected.
Jan 1 06:43:41 daemon crit pppd[257]: PPP session established.
Jan 1 06:43:41 daemon crit pppd[257]: PPP LCP UP.
Jan 1 06:43:41 daemon crit pppd[257]: Received valid IP address from server. Connection UP.
Jan 1 06:43:41 user debug syslog: route add default gw 195.34.224.47 2>/dev/null
Jan 1 06:43:41 user debug syslog: iptables -A FORWARD -o ppp_35_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jan 1 06:43:41 user debug syslog: iptables -A FORWARD -i ppp_35_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jan 1 06:43:41 user debug syslog: echo > /proc/net/ip_conntrack
Jan 1 06:43:41 user debug syslog: echo "512" > /proc/sys/net/ipv4/ip_conntrack_max
Jan 1 06:43:41 user debug syslog: iptables -t nat -D PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107 2>/dev/null
Jan 1 06:43:41 user debug syslog: iptables -t nat -D POSTROUTING -o ppp_35_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE 2>/dev/null
Jan 1 06:43:41 user debug syslog: iptables -t nat -A POSTROUTING -o ppp_35_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE
Jan 1 06:43:43 user debug syslog: iptables -D INPUT -i ppp_35_33_1 -j DROP
Jan 1 06:43:43 user debug syslog: iptables -A INPUT -i ppp_35_33_1 -j DROP