lwres_getnameinfo(3) on macOS
The text 9d7610d612df, as Mac OS X 10.8.1, Mac OS X 10.8, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2, Mac OS X 10.7.1, Mac OS X 10.7 shipped it.
lightweight resolver socket address structure to hostname and service name