The problem as I see it was caused by have a static ip setup on eth0 - but the network manager was 'swiping' the connection and attempting dhcp (which is not available on the particular network). I found that the following changes to my /etc/network/interfaces cured problems.
1. On lines following iface use a tab to indent not spaces. 2. Between keywords and data (i.e. netmask 255.255.0.0) use a single space not multiple spaces. After a reboot this cured my problems. -- Undeletable and unchangeable "auto eth0" connection https://bugs.launchpad.net/bugs/306469 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
