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→VirtualBox Network Configuration Primer
=== VirtualBox Network Configuration Primer ===
VirtualBox networking supports different configurationconfigurations. For a in-depth discussion regarding virtual networking see VBox official documentation [http://www.virtualbox.org/manual/ch06.html here].
For developing purpose, we are interested in two configuration:
* That's all, click Ok to apply changes.
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An advanced setup is to add another network adapter to be used as ''Bridged Adapter'', while keeping the first network interface with NAT
This is a useful setup, for example if your're working on a laptop connected to Internet via Wi-Fi, while you're developing using the bridged network adapter on Ethernet. In this case the VM will be able to access the public network using the NATed interface (via host WiFi) while serving TFTP/NFS file to the Embedded Linux system
To add a new network adapter:
* shutdown the VM
* open the VM <code>Settings</code> dialog
* go to the <code>Network</code> page
* select <code>Adapter 2</code> tab
* tick the <code>Enable Network Adapter</code> checkbox
* select the host network interface to bridge to in the <code>Name</code> dropdown
* hit <code>OK</code>
[[File:DVDK adding network adapter.png|none|thumb|699x699px]]
==== Network Configuration of the VM (guest) ====
[[File:DVDK_Ubuntu_Network_Configuration_1.png]]
[[File:DVDK_Ubuntu_Network_Configuration_2.png]]
[[File:DVDK_Ubuntu_Network_Configuration_3.png]]
======LXDE======
To configure the network connection, the following approaches are available:
*Edit the configuration files as described [https://help.ubuntu.com/community/NetworkConfigurationCommandLine|here]
*Using a script like the following:
<pre>
echo "nameserver 8.8.4.4" >> /etc/resolv.conf
</pre>
===== NFS Configuration =====
{{ImportantMessage|text=Latest DVDK/MVM use a different default configuration which exports <code>/home</code> directory for all IPs. Even if this is a security hole, it allows using NFS without changing the default configuration on any network
<pre>
/home 0.0.0.0/0.0.0.0(rw,sync,no_root_squash,no_subtree_check,crossmnt)
</pre>
}}
[[w:Network_File_System|NFS]] is commonly used to network mount the target root file system. NFS Server is already installed on [[:Category:DVDK|DVDK]] but needs to be configured before using it.
User just need to edit <code>/etc/exports</code> file to allow the local network to mount NFS shares.
<pre>
/home/shared 10.0.0.0/8(rw,sync,no_subtree_check,no_root_squash,no_all_squash,crossmnt)
</pre>
