So of the various ways that Windows NT pisses me off, one is networking.
Years of roaming between my home and work networks never made my Debian partition miss a beat. But with the Windows partition, it often decides to give me the finger.
Home/DHCP and Work/Static shouldn't be an issue, but however I've managed to achieve the state (more than once) it decides that Work/DNS servers should be used in place of Home/DHCP lease. Which of course means pain in my arse.
The various methods of stabbing NT's network stack with a spork through netsh and ipconfig didn't help me, or I've never learned more useful pressure points. Regardless the applied settings don't match what I've tried to configure on the connection nor the adapter through both the modern and old interface.
What finally works is this: https://superuser.com/a/1464468/295120
Hunted down the entry that corresponds to my pain woe and purged the value of ProfileNameServer for both tcpip and tcpip6. Vola the mother fucker switches back to the DNS in my DHCP lease.