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Wired internet disconnection

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http://forums.fedoraforum.org – Today my eth0 has intermittently shut down a couple of times without obvious cause from router or modem which appear normally lit. This happened a month or two ago soon after an update and them went away. I have unchecked ssh in the firewall settings as it is not needed but this has never been a problem. In the block of code there should be one attempt to graphically restart eth0. Any ideas ? Code: Oct 12 15:17:58 ljh kernel: r8169: eth0: link down Oct 12 15:17:58 ljh NetworkManager: <info>  (eth0): carrier now OFF (device state 8) Oct 12 15:17:58 ljh NetworkManager: <info>  (eth0): device state change: 8 -> 2 (reason 40) Oct 12 15:17:58 ljh NetworkManager: <info>  (eth0): deactivating device (reason: 40). Oct 12 15:17:58 ljh NetworkManager: <info>  eth0: canceled DHCP transaction, dhcp client pid 2269 Oct 12 15:17:58 ljh NetworkManager: <WARN>  check_one_route(): (eth0) error -34 returned from rtnl_route_del(): Sucess#012 Oct 12 15:17:58 ljh avahi-daemon[1320]: Withdrawing address record for 192.168.0.2 on eth0. Oct 12 15:17:58 ljh avahi-daemon[1320]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.2. Oct 12 15:17:58 ljh avahi-daemon[1320]: Interface eth0.IPv4 no longer relevant for mDNS. Oct 12 15:17:59 ljh kernel: r8169: eth0: link up Oct 12 15:17:59 ljh NetworkManager: <info>  (eth0): carrier now ON (device state 2) Oct 12 15:17:59 ljh NetworkManager: <info>  (eth0): device state change: 2 -> 3 (reason 40) Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) starting connection 'System eth0' Oct 12 15:17:59 ljh NetworkManager: <info>  (eth0): device state change: 3 -> 4 (reason 0) Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled... Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) started... Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) scheduled... Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) complete. Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) starting... Oct 12 15:17:59 ljh NetworkManager: <info>  (eth0): device state change: 4 -> 5 (reason 0) Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) successful. Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled. Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) complete. Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) started... Oct 12 15:17:59 ljh NetworkManager: <info>  (eth0): device state change: 5 -> 7 (reason 0) Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Beginning DHCP transaction. Oct 12 15:17:59 ljh NetworkManager: <info>  dhclient started with pid 2605 Oct 12 15:17:59 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) complete. Oct 12 15:17:59 ljh dhclient: Internet Systems Consortium DHCP Client 4.1.0p1 Oct 12 15:17:59 ljh dhclient: Copyright 2004-2009 Internet Systems Consortium. Oct 12 15:17:59 ljh dhclient: All rights reserved. Oct 12 15:17:59 ljh dhclient: For info, please visit http://www.isc.org/sw/dhcp/ Oct 12 15:17:59 ljh dhclient: Oct 12 15:17:59 ljh NetworkManager: <info>  DHCP: device eth0 state changed normal exit -> preinit Oct 12 15:17:59 ljh dhclient: Listening on LPF/eth0/00:1f:d0:d1:e7:f6 Oct 12 15:17:59 ljh dhclient: Sending on  LPF/eth0/00:1f:d0:d1:e7:f6 Oct 12 15:17:59 ljh dhclient: Sending on  Socket/fallback Oct 12 15:18:00 ljh dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Oct 12 15:18:06 ljh dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Oct 12 15:18:15 ljh dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6 Oct 12 15:18:21 ljh dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11 Oct 12 15:18:32 ljh dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14 Oct 12 15:18:45 ljh NetworkManager: <info>  Device 'eth0' DHCP transaction took too long (>45s), stopping it. Oct 12 15:18:45 ljh NetworkManager: <info>  eth0: canceled DHCP transaction, dhcp client pid 2605 Oct 12 15:18:45 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) scheduled... Oct 12 15:18:45 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) started... Oct 12 15:18:45 ljh NetworkManager: <info>  (eth0): device state change: 7 -> 9 (reason 5) Oct 12 15:18:45 ljh NetworkManager: <info>  Marking connection 'System eth0' invalid. Oct 12 15:18:45 ljh NetworkManager: <info>  Activation (eth0) failed. Oct 12 15:18:45 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) complete. Oct 12 15:18:45 ljh NetworkManager: <info>  (eth0): device state change: 9 -> 3 (reason 0) Oct 12 15:18:45 ljh NetworkManager: <info>  (eth0): deactivating device (reason: 0). Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) starting connection 'System eth0' Oct 12 15:23:40 ljh NetworkManager: <info>  (eth0): device state change: 3 -> 4 (reason 0) Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled... Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) started... Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) scheduled... Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) complete. Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) starting... Oct 12 15:23:40 ljh NetworkManager: <info>  (eth0): device state change: 4 -> 5 (reason 0) Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) successful. Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled. Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) complete. Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) started... Oct 12 15:23:40 ljh NetworkManager: <info>  (eth0): device state change: 5 -> 7 (reason 0) Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Beginning DHCP transaction. Oct 12 15:23:40 ljh NetworkManager: <info>  dhclient started with pid 2636 Oct 12 15:23:40 ljh NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) complete. Oct 12 15:23:40 ljh dhclient: Internet Systems Consortium DHCP Client 4.1.0p1 Oct 12 15:23:40 ljh dhclient: Copyright 2004-2009 Internet Systems Consortium. Oct 12 15:23:40 ljh dhclient: All rights reserved. Oct 12 15:23:40 ljh dhclient: For info, please visit http://www.isc.org/sw/dhcp/ Oct 12 15:23:40 ljh dhclient: Oct 12 15:23:40 ljh NetworkManager: <info>  DHCP: device eth0 state changed normal exit -> preinit Oct 12 15:23:40 ljh dhclient: Listening on LPF/eth0/00:1f:d0:d1:e7:f6 Oct 12 15:23:40 ljh dhclient: Sending on  LPF/eth0/00:1f:d0:d1:e7:f6 Oct 12 15:23:40 ljh dhclient: Sending on  Socket/fallback Oct 12 15:23:40 ljh dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Oct 12 15:23:45 ljh dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Oct 12 15:23:58 ljh dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 Oct 12 15:24:06 ljh dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 Oct 12 15:24:25 ljh NetworkManager: <info>  Device 'eth0' DHCP transaction took too long (>45s), stopping it. Oct 12 15:24:25 ljh NetworkManager: <info>  eth0: canceled DHCP transaction, dhcp client pid 2636 Oct 12 15:24:25 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) scheduled... Oct 12 15:24:25 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) started... Oct 12 15:24:25 ljh NetworkManager: <info>  (eth0): device state change: 7 -> 9 (reason 5) Oct 12 15:24:25 ljh NetworkManager: <info>  Marking connection 'System eth0' invalid. Oct 12 15:24:25 ljh NetworkManager: <info>  Activation (eth0) failed. Oct 12 15:24:25 ljh NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Timeout) complete. Oct 12 15:24:25 ljh NetworkManager: <info>  (eth0): device state change: 9 -> 3 (reason 0) Oct 12 15:24:25 ljh NetworkManager: <info>  (eth0): deactivating device (reason: 0). (HowTos)