I think I know what happens. According to README.Debian in network-manager "(...) Only devices that are *not* listed in /etc/network/interfaces or which have been configured "auto" and "dhcp" (with no other options) are managed by NM. (...)"
So if all network devices are configured in the interfaces file, or if all extra devices are disconnected, network-manager reports that there is no connection. I think network-manager should be patched to *monitor* static devices configured in the interfaces file, but refrain to mess with their configuration. I don't know how easy/difficult this would be. -- network-manager should not set offline mode when it manages no device https://launchpad.net/bugs/82335 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
