Finding your IP address
Here's how to figure out what IP address has been assigned to your Zynthian box by your local network (router).
Try entering the following terminal/console command in a console/terminal/command prompt window of your computer:
This will display a list of devices and IP addresses for things your computer knows about on your local network. One of those is likely to be your Zynthian box.
Another technique is to do a portscan (just on port 80) of the entire local subnet (usually 192.168.0.x or 192.168.1.x)
Use the following commands to do this:
nmap -p 80 192.168.1.0-255 nmap -p 80 192.168.0.0-255
This will show you the IP addresses of all computers on your local net that have a running web server.
Now you can browse to http://xxx.xxx.xxx.xxx (xxx.xxx.xxx.xxx represents the IP address of your Zynthian) and get the Zynthian web login screen.