I have a Wifi stick to connect to a wireless network, but unfortunately the vendor did not care to supply a reliable Linux driver, and the connection every so often gets lost. Since I also have a Raspberry Pi, I wanted to try and use that for internet access via ethernet cable. Having used the setup for almost a week now, I can say that it is better than the previous one although the Wifi router does not seem to be the best either, because the connection quality significantly decreases when there is lots of traffic.

Anyway, I configured my Raspberry using these howtos and docs. The following instructions are a blend of what I found in there. They assume you have already connected your machine (most likely a desktop computer) to the interface named eth0 using an ethernet cable. In this guide, eth0 is given the address

First, install dnsmasq which is used as a DHCP server to provide your machine with an IP address.

sudo apt install dnsmasq

Edit /etc/dnsmasq.conf and add the following values:


This will configure dnsmasq to use addresses starting from

Edit /etc/dhcpcd.conf and add the following at the end to configure eth0 with a static address:

interface eth0
    static ip_address=

Now restart dhcpcd to make the new settings go into effect:

sudo service dhcpcd restart

Configure port forwarding as described in the docs:

Edit /etc/sysctl.conf and uncomment this line:


Add a masquerade for outbound traffic on eth0:

sudo iptables -t nat -A  POSTROUTING -o wlan0 -j MASQUERADE

Save the iptables rule.

sudo sh -c "iptables-save > /etc/iptables.ipv4.nat"

Edit /etc/rc.local and add this just above “exit 0” to install these rules on boot.

iptables-restore < /etc/iptables.ipv4.nat

Reboot and ensure it still functions.

Now, your machine will automatically get an IP address when it is connected to the Rapsberry, and it will, assuming the Pi is itself connected, use that connection to access the internet.