This message was posted on behalf of Intel Corporation
Thank you for joining the Intel® NUC Community. I am sorry to hear you are having issues with the network.
I would like to share with you that Intel does not test and validate Intel® NUC with this operating system, the only fully supported operating system for this Intel® NUC model is Windows® 10. From our end there are no drivers for ESXi 6.5. I was double checking for more options for you in this case, but I was able to find that VMware also confirms that this specific model will not work with ESXi 6.5. You can check the VMware Compatibility Guide here: VMware Compatibility Guide - System Search. Lastly, you can also try to get more information from their forum support: https://communities.vmware.com/community/vmtn/vsphere