changing DNS server search list unregisters dynamic DNS

Is there is a fix for this apparent bug? My computer is using a static IP address, but registers itself automatically with dynamic DNS. If I change the list of DNS servers configured (even just reorder or put in only one of the servers as long as it's different from what was there before) then reboot the machine, the DNS entry gets deleted. This seems like a flaw in the design of dynamic DNS (at least in the Windows implementation). If I run ipconfig /registerdns, it does add the entry back. But this is a major problem if I want to change my list of DNS servers. All machines involved are Windows Server 2008 R2. This happens with or without IPv6 disabled.

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