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Hi, I am writing a piece of software, that needs to find specific devices on a LAN. The functionality I need is more or less a scaled-down version of "Advanced IP Scanner", or similar software. My intention is to connect to all devices in a subnet, one at a time, and get the MAC address from each device. I can determine if a device is of interest based on the 36 most significant bits of the MAC address. Now, how do I do that? I have found a number of examples that give me the MAC address of my own computer, such as this: And other examples that don't tell much about what they actually do, such as this: https://www.swissdelphicenter.ch/en/showcode.php?id=651 Does anyone around here know how to get the MAC address of devices on a LAN in Delphi?

I had compatibility issues with the connection of PAServer to the virtual Mac I am using. Giving a brief context, I am using a virtual Mac through a service provided by MacInCloud (https://www.macincloud.com/), which offers an installed and updated PAServer on the machine from the following link: https://docwiki.embarcadero.com/RADStudio/Alexandria/en/Installing_the_Platform_Assistant_on_a_Mac The problem is that the version of Delphi 11.3 we are using requires compatibility with version 13.3.12.7 of PAServer, but the download from the official Embarcadero page provides PAServer version 13.3.12.6. As the Mac machine belongs to the personnel at MacInCloud, they do not accept the installation of a .pkg that does not come from an official Embarcadero download link. (I don't have administrator permissions, so I can't install it myself.) So, the main question is, how can I get in touch with someone from Embarcadero to request an update to the official Download link?

Is there a way to back up my keychain and certificates and my project on the MacBook ? I am not familiar with a Mac just got one to compile Delphi apps I use git on windows to back up the Delphi project code just asking u guys to see if u have any tips or best practice for backing up the Mac with all the keychain ,certificates,ect Thanks for any suggestions

How limit to one instance on android, windows, linux and mac ? There is any cross platform code? Thank you in advance. Pavel