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<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
<topic xml:lang="en-us" id="addhostonlysolaris">
<title>Configuring Multiple Host-Only Network Interfaces on Oracle Solaris
Hosts</title>
<body>
<p>
By default Oracle VM VirtualBox provides you with one host-only network
interface. Adding more host-only network interfaces on Oracle
Solaris hosts requires manual configuration. Here is how to add
another host-only network interface.
</p>
<p>
Begin by stopping all running VMs. Then, unplumb the existing
"vboxnet0" interface by execute the following command as root:
</p>
<pre xml:space="preserve"># ifconfig vboxnet0 unplumb</pre>
<p>
If you have several vboxnet interfaces, you will need to unplumb
all of them. Once all vboxnet interfaces are unplumbed, remove the
driver by executing the following command as root:
</p>
<pre xml:space="preserve"># rem_drv vboxnet</pre>
<p>
Edit the file
<filepath>/platform/i86pc/kernel/drv/vboxnet.conf</filepath> and
add a line for the new interface we want to add as shown below:
</p>
<pre xml:space="preserve">name="vboxnet" parent="pseudo" instance=1;
name="vboxnet" parent="pseudo" instance=2;</pre>
<p>
Add as many of these lines as required with each line having a
unique instance number.
</p>
<p>
Next, reload the vboxnet driver by executing the following command
as root:
</p>
<pre xml:space="preserve"># add_drv vboxnet</pre>
<p>
On Oracle Solaris 11.1 and newer hosts you may want to rename the
default vanity interface name. To check what name has been
assigned, execute:
</p>
<pre xml:space="preserve">$ dladm show-phys
LINK MEDIA STATE SPEED DUPLEX DEVICE
net0 Ethernet up 100 full e1000g0
net2 Ethernet up 1000 full vboxnet1
net1 Ethernet up 1000 full vboxnet0</pre>
<p>
In the above example, we can rename "net2" to "vboxnet1" before
proceeding to plumb the interface. This can be done by executing
as root:
</p>
<pre xml:space="preserve"># dladm rename-link net2 vboxnet1</pre>
<p>
Now plumb all the interfaces using <userinput>ifconfig
vboxnet<varname>X</varname> plumb</userinput>, where
<varname>X</varname> would be 1 in this case. Once the
interface is plumbed, it may be configured like any other network
interface. Refer to the <userinput>ifconfig</userinput> documentation
for further details.
</p>
<p>
To make the settings for the newly added interfaces persistent
across reboots, you will need to edit the files
<filepath>/etc/inet/netmasks</filepath>, and if you are using NWAM
<filepath>/etc/nwam/llp</filepath> and add the appropriate entries
to set the netmask and static IP for each of those interfaces. The
Oracle VM VirtualBox installer only updates these configuration files
for the one "vboxnet0" interface it creates by default.
</p>
</body>
</topic>
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