pcap_setnonblock(3pcap) on macOS

The text 1d22c6f11e84, as macOS 10.14.6, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.

set or get the state of non-blocking mode on a capture device

pcap_setnonblock(3pcap) on macOS now