DNSv6 Settings in DHCP Server Scope Options

Question

Hi there,

I have enabled dual stack on Windows Server 2019, with DHCP and DNS function activated, the client is able to get Ipv4 Address via DHCP, DNS server v4 info as well (through DHCP), however, on v6 stack, the client get the IPv6 address only via DHCP, no DNS v6, i defined the DNSv6 info via option 23, but the client obtain the DNS server info below all the time, please help

• FEC0:0:0: FFFF::1
• FEC0:0:0: FFFF::2
• FEC0:0:0:FFFF::3

thanks

Answer 1

Hello,

After using the ipconfig /all command on the command line, it is found that the abnormal DNS address fec0:0:0:ffff::1%1 appears in the dns entry. It may be that the network configuration error causes the DNS exception. You can try the following method on the client to check Can this problem be solved by:

1. Open the text editor, enter the following text, and then change the file name to flush.bat.

@Echo on

pushd\windows\system32\drivers\etc

attrib -h -s -r hosts

echo 127.0.0.1 localhost>HOSTS

attrib +r +h +s hosts

popd

ipconfig /release

ipconfig /renew

ipconfig /flushdns

netsh winsock reset all

netsh int ip reset all

shutdown -r -t 1

del %

2. Right-click the mouse and run as administrator. The script will then reset the network settings and automatically restart the computer.

Best regards

Zunhui