Если такое, в лог роутера прёт постоянно:
18:09:40 30-09-2014 (info|authpriv|dropbear) dropbear[5186]: Exit before auth: Timeout before auth
18:09:49 30-09-2014 (info|authpriv|dropbear) dropbear[5183]: Exit before auth: Timeout before auth
19:06:31 30-09-2014 (err|daemon|miniupnpd) miniupnpd[226]: Can\'t find in which sub network the client 71.6.135.131:40000 is
19:27:42 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPDISCOVER(br0) e8:94:f6:10:52:6c
19:27:42 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPOFFER(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:27:42 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:27:42 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:45:35 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPDISCOVER(br0) e8:94:f6:10:52:6c
19:45:35 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPOFFER(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:45:35 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:45:35 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:45:39 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:45:39 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:48:09 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPDISCOVER(br0) e8:94:f6:10:52:6c
19:48:09 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPOFFER(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:09 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:09 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:48:14 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:14 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:48:41 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPDISCOVER(br0) e8:94:f6:10:52:6c
19:48:41 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPOFFER(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:41 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:41 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
19:48:46 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPREQUEST(br0) 192.168.0.100 e8:94:f6:10:52:6c
19:48:46 30-09-2014 (info|daemon|dnsmasq-dhcp) dnsmasq-dhcp[228]: DHCPACK(br0) 192.168.0.100 e8:94:f6:10:52:6c server3
, куда копать в роутер или виновный сервер 192.168.0.100?
server-light_1.9.3sysV noX