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Created September 13, 2020 00:48
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hyper-v-internal-networking.md

Hyper-V internal networking

writing this down before i forget.

main takeaways:

  • restart Windows when in doubt.

  • Don't use Hyper-V's "External" virtual switches.

  • Instead:

    1. Create a new "Internal" virtual switch to put all your VMs on.
    2. Create a bridge network using your ethernet/wireless adapter (configure network adapters in Control Panel) and this new switch.
    3. Restart windows.

  • managing networks on hyper-v is a pain because some update somewhere in Windows 10 broke how the Hyper-V virtual NIC would piggyback on the physical NIC to hoist VMs' virtual NICs onto the same subnet as the physical NIC.

  • if you were to set a Hyper-V virtual switch to "External" now, it would just hijack the physical NIC, and stop all internet traffic.

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