Networking ========== barebox has IPv4 networking support. Several protocols such as :ref:`command_dhcp`, :ref:`filesystems_nfs`, :ref:`command_tftp` are supported. Network configuration --------------------- The first step for networking is configuring the network device. The network device is usually ``eth0``. The current configuration can be viewed with the :ref:`command_devinfo` command: .. code-block:: sh barebox:/ devinfo eth0 Parameters: ipaddr: 192.168.23.197 serverip: 192.168.23.1 gateway: 192.168.23.1 netmask: 255.255.0.0 ethaddr: 00:1c:49:01:03:4b The configuration can be changed on the command line with: .. code-block:: sh eth0.ipaddr=172.0.0.10 The :ref:`command_dhcp` command will change the settings based on the answer from the DHCP server. This low-level configuration of the network interface is often not necessary. Normally the network settings should be edited in ``/env/network/eth0``, then the network interface can be brought up using the :ref:`command_ifup` command. Network filesystems ------------------- barebox supports NFS and TFTP as filesystem implementations. See :ref:`filesystems_nfs` and :ref:`filesystems_tftp` for more information. After the network device has been brought up a network filesystem can be mounted with: .. code-block:: sh mount -t tftp 192.168.2.1 /mnt or .. code-block:: sh mount -t nfs 192.168.2.1:/export none /mnt **NOTE:** this can often be hidden behind the :ref:`command_automount` command to make mounting transparent to the user. Network console --------------- barebox has a UDP-based network console. If enabled in the config, you will see something like this during startup:: registered netconsole as cs1 By default the network console is disabled during runtime to prevent security risks. It can be enabled using: .. code-block:: sh cs1.ip=192.168.23.2 cs1.active=ioe This will send UDP packets to 192.168.23.2 on port 6666. On 192.168.23.2 the scripts/netconsole script can be used to control barebox: .. code-block:: sh scripts/netconsole 6666 The netconsole can be used just like any other console.