Disable IPv6

Issue

Due to a connection issue, you need to disable Internet Protocol version 6 (IPv6).

You may also need to test how your IPv6 address interrelates with your DNS.

Solution

• Disable IPv6
• IPv6 and DNS

Disable IPv6

1. Open your Control Panel, and navigate to the Network and Sharing Center.

2. Select Change adapter settings in the left pane.

3. Locate the icon for your adapter (either wired or wireless).

 

 

Right-click the adapter icon, and select Properties from the menu that opens.

Not sure which adapter to right-click? Ask your IT administrator.

4. The Local Area Connection Properties dialog box will open.

 

 

 

Uncheck the box next to Internet Protocol Version 6 (TCP/IPv6). Then click OK.

IPv6 will now be disabled.

IPv6 Address and DNS

A slow database connection can also result from how your IPv6 address interrelates with your DNS. The order of operations in this case will be something like the following:

1. DNS lookup for server, TNShare

2. Port 3306 query sent to TCP/IP stack

3. On server, port 3306 request is routed to MySQLD service

4. On server, MySQL performs security and host validation of request

5. On server, MySQL performs query, and returns results

6. Query results return to workstation over port 3306

So, to be methodical, it's essentially a matter of going through each step to determine the source of the slowdown.