You are right ! If I remove interface-mtu from /etc/dhcp3/dhclient.conf, the network is working properly.
I found a line in my syslog file: nm-dispatcher.action: Script '/etc/NetworkManager/dispatcher.d/01ifupdown' exited with error status 1. My router is an old one and I gues it can't handle interface-mtu parameter. What will be the final solutions for this issue ? Thank You for help. -- Network is unreachable https://bugs.launchpad.net/bugs/284807 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dhcp3 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs