const syscall.IP_MULTICAST_IF

2 uses

	syscall (current package)
		zerrors_darwin_arm64.go#L582: 	IP_MULTICAST_IF                   = 0x9

	net
		sockoptip_bsdvar.go#L21: 	err = fd.pfd.SetsockoptInet4Addr(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, a)