Set up VPN connection to office. I've set up the DNS entries for the VPN connection on my MacBook. When connected to the VPN, MacBook continues to use the local DNS server instead of the ones listed for the VPN connection. Makes no sense. If that is the way it is supposed to work, then unchecking "Send all traffic over VPN connection" should grey out DNS settings.
MacBook Pro (Retina, Mid 2012), OS X Mavericks (10.9.1)