The US Netflix Catalog offers a different selection of films/movies, so some people use proxies/VPNs as a way of spoofing their location. The DNS trick works b

The US Netflix Catalog offers a different selection of films/movies, so some people use proxies/VPNs as a way of spoofing their location. The DNS trick works by having a server that returns a different A record for netflix.com (and some subdomains) - the IP of a proxy server rather than the actual IP. That way, normal traffic avoids the proxy, but Netflix traffic gets routed through.