The error message “Saving option failed. IPv4 only for Server IP lightspeed “ issue is typically caused by trying to save a Lightspeed configuration with an IPv6 address for the server IP. Lightspeed does not support IPv6, so the configuration will fail to save.
To fix this issue, you need to change the server IP to an IPv4 address. You can do this by editing the Lightspeed configuration file. The location of the configuration file will vary depending on your Lightspeed installation, but it is typically located in the following directory:
Once you have located the configuration file, open it in a text editor and change the server IP to an IPv4 address.
For example, if the current server IP is
2001:0db8:85a3:0000:0000:8a2e:0370:7334, you would change it to
Once you have changed the server IP, save the configuration file and restart Lightspeed. The error message should no longer appear.
Steps to Fix The “Saving option failed. IPv4 only for Server IP” lightspeed issue:
Here are the steps on how to fix the error message “Saving option failed. IPv4 only for Server IP lightspeed issue fix” in more detail:
Step – 1. Open a terminal window.
Step – 2. Navigate to the directory where the Lightspeed configuration file is located.
Step – 3. Use the
nano command to open the configuration file.
nano commands are text editors that are commonly used on Linux and Unix systems. You can use either command to edit the Lightspeed configuration file.
Step – 4. Find the line that specifies the server IP address.
The line that specifies the server IP address will typically be near the top of the configuration file. It will look something like this:
server_ip = 2001:0db8:85a3:0000:0000:8a2e:0370:7334
Step – 5. Change the IPv6 address to an IPv4 address.
Replace the IPv6 address in the line with an IPv4 address. For example, you might change it to:
server_ip = 192.168.1.1
Step – 6. Save the configuration file.
Once you have changed the server IP address, save the configuration file by pressing
Esc and then typing
Step – 7. Restart Lightspeed.
To restart Lightspeed, you can use the following command:
sudo service lightspeed restart
Once Lightspeed has restarted, the error message should no longer appear.