2025 Hyper V SET team not allowing DNS authentication

I’m seeing an issue on a new Windows Server 2025 Hyper-V install. Everything worked fine until I made the following changes:

1. Created a SET (Switch Embedded Teaming) virtual switch. 2. Added three host vNICs: one for Live Migration (LM), one for Heartbeat (HB), and one for Management (MGMT). 3. Configured LM and HB with IP addresses only (no gateway or DNS). 4. Configured MGMT with an IP address and DNS servers.

Since then, the host can ping the domain controllers and every other server on the network, but DNS resolution fails.

Has anyone run into this and found a fix?