Pourquoi ma connexion Ethernet est-elle connectée et déconnectée à plusieurs reprises?

Question

J'essaie juste de faire fonctionner ma connexion Ethernet dans Oneiric, et lorsque je branche le câble, il se connecte et se déconnecte pour toujours./var/syslog dit ceci (le répète encore et encore):

Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) successful, device activated. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) complete. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Get) complete. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <warn> dnsmasq exited with error: Network access problem (address in use; permissions; etc) (2) Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: activated -> failed (reason 'sharing-start-failed') [100 120 18] Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <warn> Activation (eth0) failed. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0] Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> (eth0): deactivating device (reason 'none') [0] Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: Withdrawing address record for 10.42.43.1 on eth0. Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: Leaving mDNS multicast group on interface eth0.IPv4 with address 10.42.43.1. Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: Interface eth0.IPv4 no longer relevant for mDNS. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Clearing nscd hosts cache. Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table nat --delete POSTROUTING --source 10.42.43.0/255.255.255.0 ! --destination 10.42.43.0/255.255.255.0 --jump MASQUERADE Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete FORWARD --destination 10.42.43.0/255.255.255.0 --out-interface eth0 --match state --state ESTABLISHED,RELATED --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete FORWARD --source 10.42.43.0/255.255.255.0 --in-interface eth0 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete FORWARD --in-interface eth0 --out-interface eth0 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete FORWARD --out-interface eth0 --jump REJECT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete FORWARD --in-interface eth0 --jump REJECT Sep 26 17:06:47 X58A-UD3R ntpdate[15004]: Can't find Host ntp.ubuntu.com: Name or service not known (-2) Sep 26 17:06:47 X58A-UD3R ntpdate[15004]: no servers can be used, exiting Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete INPUT --in-interface eth0 --protocol udp --destination-port 67 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete INPUT --in-interface eth0 --protocol tcp --destination-port 67 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete INPUT --in-interface eth0 --protocol udp --destination-port 53 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --delete INPUT --in-interface eth0 --protocol tcp --destination-port 53 --jump ACCEPT Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::a800:4ff:fe00:a04. Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: New relevant interface eth0.IPv6 for mDNS. Sep 26 17:06:47 X58A-UD3R avahi-daemon[1321]: Registering new address record for fe80::a800:4ff:fe00:a04 on eth0.*. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Auto-activating connection 'Wired'. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) starting connection 'Wired' Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0] Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) started... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) scheduled... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) complete. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) starting... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: prepare -> config (reason 'none') [40 50 0] Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) successful. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) complete. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) started... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: config -> ip-config (reason 'none') [50 70 0] Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Get) scheduled... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Beginning IP6 addrconf. Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: Withdrawing address record for fe80::a800:4ff:fe00:a04 on eth0. Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::a800:4ff:fe00:a04. Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: Interface eth0.IPv6 no longer relevant for mDNS. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) complete. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Get) started... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) started... Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: Joining mDNS multicast group on interface eth0.IPv4 with address 10.42.43.1. Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: New relevant interface eth0.IPv4 for mDNS. Sep 26 17:06:50 X58A-UD3R avahi-daemon[1321]: Registering new address record for 10.42.43.1 on eth0.IPv4. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> caught signal 15, shutting down normally. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Clearing nscd hosts cache. Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert INPUT --in-interface eth0 --protocol tcp --destination-port 53 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert INPUT --in-interface eth0 --protocol udp --destination-port 53 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert INPUT --in-interface eth0 --protocol tcp --destination-port 67 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert INPUT --in-interface eth0 --protocol udp --destination-port 67 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert FORWARD --in-interface eth0 --jump REJECT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert FORWARD --out-interface eth0 --jump REJECT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert FORWARD --in-interface eth0 --out-interface eth0 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert FORWARD --source 10.42.43.0/255.255.255.0 --in-interface eth0 --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table filter --insert FORWARD --destination 10.42.43.0/255.255.255.0 --out-interface eth0 --match state --state ESTABLISHED,RELATED --jump ACCEPT Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Executing: /sbin/iptables --table nat --insert POSTROUTING --source 10.42.43.0/255.255.255.0 ! --destination 10.42.43.0/255.255.255.0 --jump MASQUERADE Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> Starting dnsmasq... Sep 26 17:06:50 X58A-UD3R NetworkManager[1344]: <info> (eth0): device state change: ip-config -> activated (reason 'none') [70 100 0] Sep 26 17:06:50 X58A-UD3R dnsmasq[15064]: failed to create listening socket for 10.42.43.1: Address already in use Sep 26 17:06:50 X58A-UD3R dnsmasq[15064]: FAILED to start up

approbatory · Accepted Answer

corrigez-moi si je me trompe, mais il semble que vous essayez d'utiliser une connexion partagée. Il y a un bug dans Oneiric à ce sujet. Veuillez examiner une réponse différente pour une solution de contournement et le lien vers le bogue. La connexion filaire partagée avec d'autres ordinateurs se connecte puis se déconnecte dans l'applet nm La solution consiste à définir IPv6 pour qu'il ignore si vous modifiez la connexion, puis exécutez Sudo killall dnsmasq.

han · Answer

La même chose se produit lorsque j'essaie de servir un partage Internet sans fil ad hoc sur Ubuntu 11.10 Sudo killall dnsmasq a finalement aidé.

Geeth · Answer

Diagnostiquez le pilote en cliquant sur l'icône LAN, ouvrez Partage réseau, cliquez sur Connexions au réseau local, Diagnostiquez.

Cela s'est arrangé pour moi. Cela réinitialisera l'adaptateur de réseau local et fonctionnera donc normalement.