The only way to find the original MAC address is to use the same method the network card driver does - unfortunately, I don't believe there is a generic way to tell the driver to provide its MAC address "as provided by the hardware".
Memcpy(mac, ifr.ifr_hwaddr.sa_data, IFHWADDRLEN) #include /* for the glibc version number */
#Linux show mac address code
I suppose it should be possible to write C code for it, below code gives my current MAC but not the original MAC: #include /* Standard I/O */ Is there any utility or command for that? How do I find the original MAC address? There must be a way to find it, because it is still burned permanently into the card, but I can't find a tool to read the burned in address. Or setting it "permanently" using /etc/sysconfig/network-scripts/ifcfg-eth0.
#Linux show mac address how to
I understand how to find the current MAC address using ifconfig.īut the address can be changed, say by using ifconfig eth0 hw ether uu:vv:ww:yy:xx:zz I'm trying to figure out how to find the original MAC address of an Ethernet NIC on my Linux box. additional output removed.Is it possible to read the MAC address from the NIC directly? I have the code below but it just reads from the layer above but not the card itself. For this example, the actual MAC Address would be 00:00:0f:a1:75:a0. The MAC Address will be displayed in the form of 0:0:f:a1:75:a0 - leading zeros are removed. The MAC Address will be displayed in the form of 00:00:6b:71:1a:6a. Typing "/etc/nvram eaddr" should also show the MAC address.Path Address lu State NameUnit State ID Methods NumĢ.0.2 0x000E7F0D81D6 0 UP lan0 UP 4 ETHER 52 Hardware Station Dev Hardware Net-Interface NM Encapsulation Mjr For this example, the actual MAC Address would be 00:0E:7F:0D:81:D6. The MAC Address will be displayed in the form of 0x000E7F0D81D6 - the leading hexadecimal indicator should be removed. From the displayed information, find lan0 (this is the default first Ethernet adapter).The MAC Address will be displayed in the form of 00:00:c0:88:0a:2e.ĭevice MAC address in use Factory MAC Address Locate the number below MAC Address in use.From the displayed information, find net0 (this is the default first Ethernet adapter).The MAC Address will be displayed in the form of 00:08:c7:1b:8c:02. (Using the command"dmesg" will also display the MAC address - along with a lot of other information) Example "ifconfig -a" output: From the displayed information, find the Ethernet adapter (the name changes based on the Ethernet card installed).For this example, the actual MAC Address would be 00:03:ba:26:01:b0. The MAC Address will be displayed in the form of 0:3:ba:26:1:b0 - leading zeros are removed. From the displayed information, find the Ethernet adapter (it will probably be called le0 or ie0).The MAC Address will be displayed in the form of 00:08:C7:1B:8C:02.Įth0 Link encap:Ethernet HWaddr 00:08:C7:1B:8C:02 From the displayed information, find eth0 (this is the default first Ethernet adapter).As the root user (or user with appropriate permissions).
Unix/Linux Vendor/Ethernet MAC Address Lookup and Search -> How to find/display your MAC Address -> Unix/Linux MAC_Find: How to find/display your MAC Address - Unix/Linux How to find/display your MAC Address:
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