<varlistentry>
<term><varname>DEVICE_IFACE</varname></term>
<listitem><para>
- The interface name of the device.
+ The interface name of the control interface of the device.
+ Depending on the device type, this differs from
+ <varname>DEVICE_IP_IFACE</varname>. For example for
+ ADSL devices, this could be 'atm0' or for WWAN devices
+ it might be 'ttyUSB0'.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>DEVICE_IP_IFACE</varname></term>
<listitem><para>
- The IP interface name of the device.
+ The IP interface name of the device. This is the network
+ interface on which IP addresses and routes will be configured.
</para></listitem>
</varlistentry>
<varlistentry>