This has been happening to me for a couple of years. I have purchased a new router, replaced my old modem with a new one from my ISP, had my ISP investigate (All they did was replace some power cords and old wires. Looked at my router and said "this is not our router, i can't do anything with it." I also play on xbox live a lot which is my main concern because i can stand disconnecting for a second while on my pc but if i disconnect while playing xbox it's just annoying, and a lot of stuff goes wrong. Anyways, today i was getting disconnections more often than usual... so i went and watched my security log on my router as i disconnected (on my wireless laptop however). hopefully the log will give you clue as to what is wrong but i can't make sense of it. (My router's time is WAY off and won't let me fix/change it lol.
My xbox is set as a Static IP of 10.0.0.9 my DHCP range is 10.0.0.2 to 10.0.0.8
Jan 3 03:21:55 router user.err udhcpd: send OFFER failed
Jan 3 03:21:55 router user.notice udhcpd: send OFFER failed
Jan 3 03:21:58 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:22:00 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:24:04 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:24:13 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:25:11 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.2
Jan 3 03:25:29 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.2 to 10.0.0.1
Jan 3 03:28:15 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:28:19 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:28:22 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:29:11 router user.err syslog: Unable to open printcap file /etc/printcap for read!
Jan 3 03:29:11 router user.err syslog: Unable to open printcap file /etc/printcap for read!
Jan 3 03:30:03 router user.info udhcpc: Received DHCP NAK
Jan 3 03:30:06 router user.warn syslog: Warn: select() failure; Errno(4): Interrupted system call
Jan 3 03:30:06 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:30:06 router daemon.info dnsmasq[2533]: read /etc/hosts - 3 addresses
Jan 3 03:30:11 router user.info udhcpc: Lease of (IP) obtained, lease time 3600
Jan 3 03:30:11 router daemon.info dnsmasq[2533]: exiting on receipt of SIGTERM
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: started, version cachesize 150
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: read /etc/hosts - 3 addresses
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: using nameserver (IP)#53
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: using nameserver (IP)#53
Jan 3 03:30:55 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:31:20 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:31:36 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:31:58 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
I changed my IP to (IP) so it wouldn't show. Thanks for taking the time to read this.
Another Log from getting disconnected
Jan 1 01:28:08 Received DHCP NAK
Jan 1 01:28:11 Warn: select() failure; Errno(4): Interrupted system call
Jan 1 01:28:11 Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 1 01:28:11 read /etc/hosts - 3 addresses
Jan 1 01:28:17 Lease of (IP) obtained, lease time 3600
Jan 1 01:28:17 exiting on receipt of SIGTERM
Jan 1 01:28:17 started, version cachesize 150
Jan 1 01:28:17 compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Jan 1 01:28:17 read /etc/hosts - 3 addresses
Jan 1 01:28:17 using nameserver 198.153.194.130#53
Jan 1 01:28:17 using nameserver 198.153.192.130#53
Jan 1 01:28:27 Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 1 01:28:51 Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 1 01:28:53 Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
My xbox is set as a Static IP of 10.0.0.9 my DHCP range is 10.0.0.2 to 10.0.0.8
Jan 3 03:21:55 router user.err udhcpd: send OFFER failed
Jan 3 03:21:55 router user.notice udhcpd: send OFFER failed
Jan 3 03:21:58 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:22:00 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:24:04 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:24:13 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:25:11 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.2
Jan 3 03:25:29 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.2 to 10.0.0.1
Jan 3 03:28:15 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:28:19 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:28:22 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:29:11 router user.err syslog: Unable to open printcap file /etc/printcap for read!
Jan 3 03:29:11 router user.err syslog: Unable to open printcap file /etc/printcap for read!
Jan 3 03:30:03 router user.info udhcpc: Received DHCP NAK
Jan 3 03:30:06 router user.warn syslog: Warn: select() failure; Errno(4): Interrupted system call
Jan 3 03:30:06 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:30:06 router daemon.info dnsmasq[2533]: read /etc/hosts - 3 addresses
Jan 3 03:30:11 router user.info udhcpc: Lease of (IP) obtained, lease time 3600
Jan 3 03:30:11 router daemon.info dnsmasq[2533]: exiting on receipt of SIGTERM
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: started, version cachesize 150
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: read /etc/hosts - 3 addresses
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: using nameserver (IP)#53
Jan 3 03:30:11 router daemon.info dnsmasq[2985]: using nameserver (IP)#53
Jan 3 03:30:55 router user.warn syslog: Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 3 03:31:20 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 3 03:31:36 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 3 03:31:58 router user.warn syslog: Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
I changed my IP to (IP) so it wouldn't show. Thanks for taking the time to read this.
Another Log from getting disconnected
Jan 1 01:28:08 Received DHCP NAK
Jan 1 01:28:11 Warn: select() failure; Errno(4): Interrupted system call
Jan 1 01:28:11 Warn: MRT_DEL_MFC; Errno(2): No such file or directory
Jan 1 01:28:11 read /etc/hosts - 3 addresses
Jan 1 01:28:17 Lease of (IP) obtained, lease time 3600
Jan 1 01:28:17 exiting on receipt of SIGTERM
Jan 1 01:28:17 started, version cachesize 150
Jan 1 01:28:17 compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Jan 1 01:28:17 read /etc/hosts - 3 addresses
Jan 1 01:28:17 using nameserver 198.153.194.130#53
Jan 1 01:28:17 using nameserver 198.153.192.130#53
Jan 1 01:28:27 Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1
Jan 1 01:28:51 Warn: The origin for route (IP) changed from 10.0.0.1 to 10.0.0.9
Jan 1 01:28:53 Warn: The origin for route (IP) changed from 10.0.0.9 to 10.0.0.1