You can use many of the troubleshooting tools to resolve IPv4 and IPv6 problems.
If you have IPv6 configured on the server, you can use several of the same troubleshooting tools as you do for IPv4. For example, tools such as trace route and PING accept both the IPv4 and IPv6 address formats, so you can use them to test connections and routes for both types of networks. In addition, you can use the communications trace function to trace data on both IPv4 and IPv6 communications lines.
See TCP/IP troubleshooting for a general troubleshooting guide that provides techniques for solving problems related to IPv4 and IPv6.