Looking for info or existing documentation that describes how Windows resolves merging of 'duplicate' information when using DHCPv4 and DHCPv6 in a duial stack environment. Specifically, if the v4 and v6 DHCP servers provide DNS server addresses, how does the client use that information. Is there some merging scheme, possibly adding to the list of servers in order received, or does one protocol take precedence over the other. I see RFC4477 discusses the issue and provides some possible solutions, but no idea what Msoft uses. Any info or pointers are appreciated.

Hi, Thank you for posting! Please refer to the following articals for more detailed information: IPv6 and IPv4 Coexistence Configuring DNS for IPv6/IPv4 Coexistence Host Name Resolution for Dual Stack (IPv4/IPv6) IPv6 Support Dual-Stack Sockets Hope it helps. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.