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When the default wired connection is deleted or saved to a new persistent connection by a plugin, the device is added to a list in the file /var/run/Network Manager/no-auto-default.state to prevent creating the default connection for that device again.Comma-separated list of devices for which Network Manager will (partially) ignore the carrier state.Lines beginning with a '#' and blank lines are considered comments.Sections are started by a header line containing the section enclosed in '[' and ']', and ended implicitly by the start of the next section or the end of the file.Note that the "carrier" property of NMDevices and device D-Bus interfaces will still reflect the actual device state; it's just that Network Manager will not make use of that information. dnsmasq: Network Manager will run dnsmasq as a local caching nameserver, using a "split DNS" configuration if you are connected to a VPN, and then update to point to the local nameserver. Currently the following values are supported: RLIMIT_CORE: set ulimit -c unlimited to write out core dumps. Here hwaddr is the MAC address of the device to be ignored, in hex-digits-and-colons notation. Example: If set to true, then interfaces listed in /etc/network/interfaces are managed by Network Manager. TRACE enables even more verbose logging then DEBUG level.unbound: Network Manager will talk to unbound and dnssec-triggerd, providing a "split DNS" configuration with DNSSEC support. ifname is the interface name of the ignored device. If set to false, then any interface listed in /etc/network/interfaces will be ignored by Network Manager. Subsequent levels also log all messages from earlier levels; thus setting the log level to INFO also logs error and warning messages.
In addition, these special domains can be used: NONE, ALL, DEFAULT, DHCP, IP.Network - Network Manager configuration file /etc/Network Manager/Network Manager.conf, /etc/Network Manager/conf.d/This is a configuration file for Network Manager.