The overall troubleshooting methodology is similar to IPv4 troubleshooting with the following notable considerations in each troubleshooting stage:

• Confirm current settings: The existing IPv6 settings should be confirmed due to the default nature of IPv6 clients attempting to auto-configure themselves.
• Validate IPv6 connectivity: If all settings appear correct, the ping utility can be used to confirm that the computer can ping its own loopback address by issuing the command ping ::1. If the command is successful, the TCP/IP Ipv6 protocol is functional on the computer.
• Verify DNS name resolution: Different types of records are registered with the DNS server depending on the IP data the client is registering.
• Verify data connections: Using the telnet application is a common tool for administrators to test application connectivity. The telnet utility does not guarantee it will use IPv6 to connect to a remote service unless the target address is specified as an IPv6 address.