Strcpy(mac, ether_ntoa((ether_addr *) ifr.ifr_hwaddr. Int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) To review, open the file in an editor that reveals hidden Unicode characters. Finally, we print MAC address to the console. c-getethmac.c This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Note that we create a character array with a size of 18 (17 characters for the MAC address string, plus a null terminator). Using the ether_ntoa function, we convert the binary MAC address to a human-readable string. A MAC address is an L2 (link layer) address that allows other computers to send a packet to a specific other computer on the same link layer. a router / firewall the MAC address of the client is not in the tcp/ip headers at all, and You'd only get it in the form of contextual data actually passed from the client. once you have crossed a layer 3 barrier, i.e. Rep: It's technically none of your business what the mac address is. The MAC address is returned to the ifr_hwaddr member of the ifreq structure. Distribution: Gentoo, RHEL, Fedora, Centos. In the following code, we create a socket, initialize an ifreq structure with the name of the interface ( wlo1 in this case), and call the ioctl function. We can use the ioctl function with the SIOCGIFHWADDR request to retrieve the MAC address for a specified network interface on Linux. You can use cmd+a to select all, cmd+c to copy.

This tutorial explains how to get the MAC address on Linux using C++. Type /sbin/ifconfig this will list your IP address as well your MAC address.

Getting the MAC address of a network interface is useful in many situations, especially in network administration, security, diagnostics and device identification.

A MAC (Media Access Control) address is a unique value assigned to a network interface card (NIC, also called network adapter) by the manufacturer to uniquely identify it.

Linux get mac address c