In case you didn't notice, 7.4 was just release. An interesting snippet from the release notes regarding apple devices...
•Support for the Multicast DNS (mDNS) protocol is introduced. Multicast DNS (mDNS) service discovery provides the ability for wireless clients to access Apple services such as Apple Printer and Apple TV advertised in a different Layer 3 network. mDNS performs DNS queries over IP multicast. mDNS supports zero configuration IP networking. As a standard, mDNS uses multicast IP address 224.0.0.251 as the destination address and 5353 as the UDP destination port. Andy Page University of Notre Dame
