If you’re a Mac user who often uses VPN connections, you’ll notice one very disappointing thing about connecting to your corporate or personal network over such tunneled connections: typically, Bonjour-style addresses (such as computer-name.local) don’t work.
This is because multicast DNS (or mDNS) doesn’t work over a tunnel. Though there are ways to get it functional, they are pretty complicated and require that you have a lot of esoteric networking knowledge.