NAME

       main.conf - ConnMan configuration file

SYNOPSIS

       /etc/connman/main.conf

DESCRIPTION

       main.conf  is  a configuration file for ConnMan. The configuration file is optional but it
       can be used to set up various aspects of ConnMan's behavior. The location of the file  may
       be changed through use of the --config= argument for connman(8).

FILE FORMAT

       The  configuration  file  format  is key file format.  It consists of sections (groups) of
       key-value pairs.  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.  Each  key-value
       pair must be contained in a section.

       Description of sections and available keys follows:

   [General]
       This section is the only mandatory section of the configuration file.

       InputRequestTimeout=secs
              Set  input  request  timeout.  Default  is  120 seconds The request for inputs like
              passphrase will timeout after certain amount of time. Use this setting to  increase
              the value in case of different user interface designs.

       BrowserLaunchTimeout=secs
              Set  browser  launch  timeout.  Default  is 300 seconds The request for launching a
              browser for portal pages will timeout  after  certain  amount  of  time.  Use  this
              setting to increase the value in case of different user interface designs.

       BackgroundScanning=true | false
              Enable  background scanning. Default is true.  Background scanning will start every
              5 minutes unless the scan list is empty. In that case, a simple  backoff  mechanism
              starting from 10s up to 5 minutes will run.

       FallbackTimeservers=server[,...]
              List  of Fallback timeservers separated by ",".  These timeservers are used for NTP
              sync when there are no timeserver set by the user or by  the  service.   These  can
              contain mixed combination of fully qualified domain names, IPv4 and IPv6 addresses.

       FallbackNameservers=server[,...]
              List  of  fallback nameservers separated by "," appended to the list of nameservers
              given by the service. The nameserver entries must be in numeric format, host  names
              are ignored.

       DefaultAutoConnectTechnologies=technology[,...]
              List  of  technologies  that  are  marked  autoconnectable by default, separated by
              commas ",". The default value for this entry when empty is  ethernet,wifi,cellular.
              Services  that  are  automatically  connected  must  have  been set up and saved to
              storage beforehand.

       AlwaysConnectedTechnologies=technology[,...]
              List of technoolgies which are always connected regardless of PreferredTechnologies
              setting  (AutoConnect  =  true).  The  default  value  is empty and this feature is
              disabled unless explicitly enabled in the config file.

       PreferredTechnologies=technology[,...]
              List of preferred technologies from the most preferred one to the  least  preferred
              one  separated by commas ",".  Services of the listed technology type will be tried
              one by one in the order given, until one of them gets connected  or  they  are  all
              tried.  A  service  of  a  preferred  technology type in state 'ready' will get the
              default route when compared to another preferred type further down  the  list  with
              state  'ready'  or  with  a non-preferred type; a service of a preferred technology
              type in state 'online' will get the default route when compared to  either  a  non-
              preferred type or a preferred type further down in the list.

       NetworkInterfaceBlacklist=interface[,...]
              List  of blacklisted network interfaces separated by ",".  Found interfaces will be
              compared to the list and will not be handled by connman, if their first  characters
              match any of the list entries. Default value is vmnet,vboxnet,virbr,ifb.

       AllowHostnameUpdates=true | false
              Allow  connman  to  change  the  system hostname. This can happen for example if we
              receive DHCP hostname option.  Default value is true.

       SingleConnectedTechnology=true | false
              Keep only a single connected  technology  at  any  time.  When  a  new  service  is
              connected  by the user or a better one is found according to PreferredTechnologies,
              the new service is kept connected and all the other previously  connected  services
              are  disconnected.  With  this  setting  it  does not matter whether the previously
              connected services are in 'online' or 'ready' states, the newly  connected  service
              is  the  only one that will be kept connected. A service connected by the user will
              be used until going out of network coverage. With this setting enabled applications
              will notice more network breaks than normal. Default value is false.

       TetheringTechnologies=technology[,...]
              List  of  technologies  that are allowed to enable tethering separated by ",".  The
              default value is wifi,bluetooth,gadget. Only those  technologies  listed  here  are
              used  for  tethering.  If  one wants to tether ethernet, then add "ethernet" in the
              list.  NOTE that if ethernet tethering is enabled, then a DHCP server is started on
              all  ethernet  interfaces. Tethered ethernet should never be connected to corporate
              or home network as it will disrupt normal operation of these networks. Due to  this
              ethernet  is not tethered by default. Do not activate ethernet tethering unless you
              really know what you are doing.

       PersistentTetheringMode=true | false
              Restore earlier tethering status when returning from offline  mode,  re-enabling  a
              technology, and after restarts and reboots.  Default value is false.

       Enable6to4=true | false
              Automatically  enable Anycast 6to4 if possible. This is not recommended, as the use
              of 6to4 will generally lead to a severe degradation  of  connection  quality.   See
              RFC6343.  Default value is false (as recommended by RFC6343 section 4.1).

       VendorClassID=string
              Set  DHCP  option 60 (Vendor Class ID) to the given string. This option can be used
              by DHCP servers to identify specific clients without having to rely on MAC  address
              ranges, etc

       EnableOnlineCheck=true | false
              Enable  or disable use of HTTP GET as an online status check.  When a service is in
              a READY state, and is selected as default, ConnMan will issue an HTTP  GET  request
              to verify that end-to-end connectivity is successful. Only then the service will be
              transitioned to ONLINE state.  If this setting is false, the default  service  will
              remain in READY state.  Default value is true.

EXAMPLE

       The  following  example  configuration  disables  hostname  updates  and  enables ethernet
       tethering.

       [General]
       AllowHostnameUpdates = false
       TetheringTechnologies = ethernet,wifi,bluetooth,gadget

SEE ALSO

       connman(8)

                                            2015-10-15                            connman.conf(5)