![]() The ifreq structure should initially contain the name of the interface to be queried, which should be copied into the ifr_name field. The following header files will be needed:Ĭreate an ifreq structure for passing data in and out of ioctl Extract the hardware address from the ifreq structure.Check the type of the returned hardware address.Create an ifreq structure for passing data in and out of ioctl. ![]() The method described here has five steps: On Linux-based systems the MAC address of an interface can be obtained using the ioctl command SIOCGIFHWADDR. ![]() The variable if_name points to a null-terminated string containing the name of the interface (for example, eth0). Suppose you wish to display the MAC address of an Ethernet interface.
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