pcap_can_set_rfmon(3pcap) on macOS
The text 3b709f4b0259, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
check whether monitor mode can be set for a not-yet-activated capture handle