Lo (localhost interface 'lo' which should be ignored), and the ethernet interface - in this case enp63s0. Then run the command ip link show ip link showġ: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 (You can also connect them through a small switch, but the switch should not be connected to the rest of your network). Please support the nixCraft with a PayPal donation or Patreon.Start up a linux box, and plug it and your mystery machine back to back with ethernet. Keeping the site online is challenging, with everyone blocking Ads 😔. nixCraft is a one-person show, and many of you use Adblocker. 🥺 Was this helpful? Please add a comment to show your appreciation or feedback. Join the nixCraft community via RSS Feed or Email Newsletter. He wrote more than 7k+ posts and helped numerous readers to master IT topics. Vivek Gite is the founder of nixCraft, the oldest running blog about Linux and open source. Inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 Inet 74.xx.yy.zzz netmask 0xfffffff0 broadcast 74.xx.yyy.zzz OR as a root user type following command: # grep eth0 /var/log/dmesgĮth0: RealTek RTL8139 at 0xc000, 00:0f:ea:91:04:07, IRQ 18Įth0: Identified 8139 chip type 'RTL-8100B/8139D'Įth0: link up, 100Mbps, full-duplex, lpa 0x45E1 FreeBSD example TX packets:3869 errors:0 dropped:0 overruns:0 carrier:0 RX packets:3869 errors:0 dropped:0 overruns:0 frame:0

TX packets:109216 errors:0 dropped:0 overruns:0 carrier:0 RX packets:60400 errors:0 dropped:0 overruns:0 frame:0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 In order to find out MAC address of system you can use ifconfig command as follows: Ifconfig is used to configure the kernel-resident network interfaces. (see mac address at wikipedia for more information).įollowing command work with Linux and other UNIX oses: ifconfig command

Most layer 2 network protocols use one of three numbering spaces managed by the IEEE: MAC-48, EUI-48, and EUI-64, which are designed to be globally unique. A mac address is acronym for media access control address, is a unique address assigned to almost all-networking hardware such as Ethernet cards, router etc.

How to determine mac address