I've the same problem on a just installed ubuntu. I took notice that this issue arose only when my wifi router configured in a protected mode (WPA-PSK/WPA2-PSK, TKIP+AES). In an open mode wifi is OK. Hope this notice will helpful.
-- NetworkManager wrongly releases DHCP IP https://bugs.launchpad.net/bugs/105251 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