Result (if the computer has a network card): Ip: 192.168.0. However the above recommendation of 'sudo nmap -sn 192.168.0.0/24' is the best quickest method to get the all the MACs for the IPs on your local network/vlan/subnet What the OP doesnt mention, is the only way to get the MAC address this way, you MUST use sudo(or other super user privs i.e.

The MAC address will be the string in the square brackets. ('Mac: ' + GetNetworkAddress.GetAddress('mac')) You should see a window with a list of devices on your local network. It translates to 168.192 in decimal, which makes me suspect that you're in fact looking at the IPv4 header rather than the Ethernet header. How to use it: ('Ip: ' + GetNetworkAddress.GetAddress('ip')) 4 Answers Sorted by: 5 Where exactly in the kernel are you doing this a8:c0 looks quite suspicious. On Windows 8 and 10, press Windows+X, and then click Device Manager on the Power User menu. If the computer has no interface, then it will return an String containing null, otherwise will return a String containing what you asked for (the ip address or the mac). Most network cards allow you to set a custom MAC address from their configuration panes in the Device Manager, although some network drivers may not support this feature. You need to specify a parameter with a String containing 'ip' or 'mac' depending on what you need to check. I know the MAC address is on the ARP table as it is inserted in it together with the corresponding IP when a Ethernet packet is received for that IP for the first time, but it would be great to get it from the Ethernet header itself to save time, as my program will be doing this several thousands of times per minute. With all the possible solutions that i've found here and another replies, then i will contribute with my solution.

Getting mac address of ethernet linux