Once you are connected to your Network you should be seeing the Yellow and Green LED's on the Ethernet connector indicating that a link has been established
By default the Kumquat is configured to get an IP-Address using DHCP
### Finding the IP Address of eth0
To find the IP address of eth0 on Linux, you can use the `ip` command. Open a terminal and type:
```sh
ip addr show eth0
```
This command will display the IP address, subnet mask, and other network information associated with the eth0 interface.
### Checking the Link State of eth0
To check the link state of eth0, you can again use the `ip` command:
```sh
ip link show eth0
```
This command will display the status of the eth0 interface, including whether it is up or down, and whether the link is connected or disconnected.
### Configuring Static IP Instead of DHCP
To configure a static IP address for eth0 instead of using DHCP, you need to edit the network configuration file. In Buildroot, this file is typically located in `/etc/network/interfaces`.
Open the network configuration file in a text editor:
```sh
nano /etc/network/interfaces
```
Add or modify the configuration for eth0 to specify a static IP address, subnet mask, gateway, and DNS servers. For example:
```
auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4
```
Replace `192.168.1.100` with the desired static IP address, `255.255.255.0` with the appropriate subnet mask, `192.168.1.1` with the gateway address, and `8.8.8.8` and `8.8.4.4` with the DNS server addresses.
Save the file and exit the text editor.
After making these changes, you need to restart the networking service to apply the new configuration:
```sh
/etc/init.d/network restart
```
This will bring up the eth0 interface with the configured static IP address.
