ip link

Manage network interfaces. More information: https://man7.org/linux/man-pages/man8/ip-link.8.html.

• Show information about all network interfaces:
  ip link
• Show information about a specific network interface:
  ip link show {{ethN}}
• Bring a network interface up or down:
  ip link set {{ethN}} {{up|down}}
• Give a meaningful name to a network interface:
  ip link set {{ethN}} alias "{{LAN Interface}}"
• Change the MAC address of a network interface:
  ip link set {{ethN}} address {{ff:ff:ff:ff:ff:ff}}
• Change the MTU size for a network interface to use jumbo frames:
  ip link set {{ethN}} mtu {{9000}}