@nikker Looking at the steps you did previously dnsmasq and the dhcp setup is not required if you hard set the ip address on your Duet, remember to set the netmask and gateway however:
From the config details you posted in your previous post
M552 S1 P192.168.1.50 #set Duet IP address
M553 P255.255.255.0 #set subnet mask
M554 P192.168.1.1 #set gateway
Key is making sure the gateway on the Duet is set to the ip the Pi has on eth0.
What is the network address you use on your wireless network? Without getting too much into routing / subnetting, if your wireless network IP is 192.168.1.x you will have problems.
Removing DHCP/dnsmasq from your setup means you can remove the following steps:
update packages and install dnsmasq:
sudo apt-get update"
sudo apt-get install dnsmasq -y
Copy and save the original dnsmasq.conf
sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig
Configure the new dnsmasq.conf
sudo nano /etc/dnsmasq.conf and paste the following:
interface=eth0 # Use interface eth0
listen-address=192.168.1.1 # Explicitly specify the address to listen on
bind-interfaces # Bind the interface to make sure we aren't sending thingselsewhere
server=22.214.171.124 # Forward DNS requests to Google DNS
domain-needed # Don't forward short names
bogus-priv # Never forward addresses in the non-routed address spaces.
dhcp-range=192.168.1.50,192.168.1.150,12h # Assign IP addresses between 172.24.1.50 and 172.24.1.150 with a 12 hour lease time