 While there is general consensus that this new method of domain name resolution accelerated the time required for a DNS look-up to be completed, it also exposed VPN users to DNS leaks when connected to a VPN endpoint, because the computer would no longer use only the DNS servers assigned by the VPN service.Instead the DNS request would be sent through all available interfaces, thus the DNS traffic would travel out of the VPN tunnel and expose the user's default DNS servers.Websites exist to allow testing to determine whether a DNS leak is occurring.