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YannDublanche-8545 avatar image
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YannDublanche-8545 asked LimitlessTechnology-2700 answered

Windows 11 - DHCP server strange behavior

Hello

I am currently testing the compatibility of our organization with Windows 11 and I am facing a strange behavior. The DNS service is not working well with Windows 11.

On Windows 10 there is no issue and all the IP addresses are resolved correctly from our DNS, but on Windows 11, the DNS results are strange depending on the IP settings of the computer.

If I am connected by VPN with an IP address provided by the VPN DHCP service, everything works as expected.

If I am connected to the internal network with the IP address provided by the DHCP service located on one corporate Windows server:
- If the request belongs to our main domain, nslookup provides the correct internal IP address
- If the request belongs to an internal domain only, nslookup provides the correct internal IP address
- If the request belongs to any other domain, nslookup provides the public IP address instead of the internal IP address

If I am connected to the internal network with the IP address provided in theory by the DHCP server configured manually on the computer, everything works as expected.

Has anybody experienced the same issue? It seems that the DHCP service is not providing only IP address, netmask, gateway and DNS or that Windows 11 is expecting more information that are currently not configured in our DHCP server.

Thanks in advance

Best regards

Yann

windows-11windows-dhcp-dns
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1 Answer

LimitlessTechnology-2700 avatar image
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LimitlessTechnology-2700 answered

Hello

This may see some transition issue between local settings and VPN setting. Perform the next steps while connected to VPN and then test again.

From an elevated command prompt execute on the client (connected to VPN):

ipconfig /flushdns
ipconfig /registerdns

then to see the saved information:

ipconfig/displaydns



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