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:
/etc/lightspeed/lightspeed.conf
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 192.168.1.1.
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.
Open a terminal window and navigate to the directory where the LiteSpeed configuration file is located, typically /etc/lightspeed/lightspeed.conf.
Step – 2. Navigate to the directory where the Lightspeed configuration file is located.
Step – 3. Use the vi or nano command to open the configuration file.
The vi and 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 :wq.
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.
IPv4 and IPv6 addresses
| Feature | IPv4 | IPv6 |
|---|---|---|
| Keyword | inet | inet6 |
| Notation | Standard dotted-decimal notation (e.g., 192.168.1.100) | Colon-separated hexadecimal notation (e.g., fe80::1234:5678:9abc) |
| Additional Information | N/A | Includes prefix length (e.g., prefixlen 64) and scope ID (e.g., scopeid 0x20<link>) |
How can I check if my server IP is IPv4 or IPv6?
To check if your server IP is IPv4 or IPv6, you can use the following methods:
1. Using ifconfig Command:
On Linux, you can use the ifconfig command to check the IP addresses assigned to each network interface. Look for the inet or inet6 lines in the output. If you see an inet6 line, it indicates that the interface has an IPv6 address.
bash
ifconfig -aOn Windows, you can use the ipconfig command to check the IP addresses. Look for the IPv4 Address and IPv6 Address lines in the output. If you see an IPv6 address, it indicates that the system supports IPv6.
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ifconfig -all2. Using Online Tools:
You can use online tools like Show My IP or What Is My IP Address to check your public IP address. These tools will display both your IPv4 and IPv6 addresses if your system supports both.
3. Using ping Command:
You can use the ping command with the -6 option to check for IPv6 connectivity. If the command works, it indicates that the system supports IPv6.
4. Using ping6 Command:
The ping6 command is specifically designed for IPv6. If you can successfully ping an IPv6 address, it indicates that the system supports IPv6.
