Actually it's not the router. If I restart networking it works. When I type "sudo /etc/init.d/networking restart" I get this
$ sudo /etc/init.d/networking restart Password: * Reconfiguring network interfaces... eth2: ERROR while getting interface flags: No such device There is already a pid file /var/run/dhclient.eth2.pid with pid 134993416 Internet Systems Consortium DHCP Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ SIOCSIFADDR: No such device eth2: ERROR while getting interface flags: No such device eth2: ERROR while getting interface flags: No such device Bind socket to interface: No such device Failed to bring up eth2. ath0: ERROR while getting interface flags: No such device There is already a pid file /var/run/dhclient.ath0.pid with pid 134993416 Internet Systems Consortium DHCP Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ SIOCSIFADDR: No such device ath0: ERROR while getting interface flags: No such device ath0: ERROR while getting interface flags: No such device Bind socket to interface: No such device Failed to bring up ath0. wlan0: ERROR while getting interface flags: No such device There is already a pid file /var/run/dhclient.wlan0.pid with pid 134993416 Internet Systems Consortium DHCP Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ SIOCSIFADDR: No such device wlan0: ERROR while getting interface flags: No such device wlan0: ERROR while getting interface flags: No such device Bind socket to interface: No such device Failed to bring up wlan0. RTNETLINK answers: File exists run-parts: /etc/network/if-up.d/avahi-autoipd exited with return code 2 [ OK ] And the Internet starts working -- no internet connection until I restart router https://bugs.launchpad.net/bugs/112590 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs