[octoberfranklin]

Never send DNS queries into a VPN. They are all logged along with the originating client IP.

If your VPN provider claims they "don't log" it just means they're tagging the query with your IP as it leaves their network and letting their upstream ISP do the logging.

Never, ever, send UDP/53 traffic into a VPN.

[cuillevel3]

Indeed, however there are more use cases for VPNs. You might run a "road warrior"-setup, connecting to the company network for services and accidentally leaking company DNS info to the airports WLAN provider.

DNS setup is messy.