Dropped the word physical from generic type description

### 4.3.2 Types of network interface

A physical network interface connects via a communications bus to the host. The host transmits to and receives data from the network by means of a device driver interface provided by the device driver for the network interface. A physical network interface might read and write the host memory directly and raise interrupts. It sometimes has more advanced features that allow it to power cycle the entire system, download files using simple protocols, and act as a simple boot loader.

A network interface connects via a communications bus to the host. The host transmits to and receives data from the network by means of a device driver interface provided by the device driver for the network interface. A network interface might read and write the host memory directly and raise interrupts. It sometimes has more advanced features that allow it to power cycle the entire system, download files using simple protocols, and act as a simple boot loader.

![Figure 4.3.2-1: Physical network device architecture](media/physical_network_interface.drawio.png)