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)