- External load balancing is enabled on a Windows Server 2012-based DirectAccess server in a network environment.
- The network environment contains some IP version 4 (IPv4)-only intranet resources.
- You use DNS64 to synthesize IPv6 addresses from the IPv4 addresses to reach internal IPv4 resources.
More specifically, when you run the following cmdlet, DNS64 displays "Loopback Pseudo-Interface" as the interface name in the AcceptInterface field:
netsh int ipv6 show address
- The expected behavior is that the IPv6 address binds to the loopback interface.
- DNS64 is a mechanism that synthesizes AAAA records (IPv6 address records) from A records (address records).
- After you enable external load balancing, DNS64 accepts a loopback interface.
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website: Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
PrerequisitesTo apply this hotfix, you must be running Windows Server 2012.
Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirementYou must restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
- Run the following command to obtain the necessary interface index information:
netsh int ipv6 show int
- Run the following command to remove the DNS64 IPv6 address from the physical network interface:
netsh int ipv6 delete address <physical network interface index> <ipv6 address>
- Run the following command to bind the DNS64 IPv6 address to the loopback interface:
netsh int ipv6 add address <loopback interface index> <ipv6 address> /128
- Run the following command to verify the changes:Note The DNS64 IPv6 address should be bound to the loopback interface.
netsh int ipv6 show address
- Restart the computer.