Before deploy my server 2012 r2 essentials, i had erase from nic the ipv6 address from protocoll ipv6 and uncheck the ipv6

Now deploy the wsus and the server are configure with group policy

But show the server with ipv6 ip address ::1

Why ?

Hi

 You should configure Ipv6 binding settings;

check article Modify the protocol bindings and network provider order

https://technet.microsoft.com/en-us/library/cc732472(v=ws.10).aspx

Also there are more services could use IPv6,so you don't need to disabled it,if you configure protocol binding that is enough.

• Proposed as answer by Steven_Lee0510Microsoft contingent staff, Moderator 4 hours 51 minutes ago

Hi,

It is not recommanded to disable the IPv6. Please leave IPv6 enabled, even if you do not have an IPv6-enabled network, either native or tunneled.

For detailed information, please refer to the link below,

http://blogs.technet.com/b/netro/archive/2010/11/24/arguments-against-disabling-ipv6.aspx

Best Regards.