yeah there seem to be quite a few issues with disabling this for some reason - hopefully someone from VM will pick this thread up and comment but in the meantime, it is possible to work around the issue..
If you use the hub in router mode then the workaround is clunky - you have to manually set DNS servers on each of your clients.. just use google's DNS infrastructure (8.8.8.8 / 8.8.4.4)
If you use the hub in modem mode and have your own 3rd party router then it's a bit easier as you're likely able to modify your DHCP configuration to hand out alternate DNS servers to all of your clients, so don't need to manually change it on each one.