tldr/pages/linux/ip-link.md

ip link

Manage network interfaces. More information: https://manned.org/ip-link.

• Show information about all network interfaces:

ip {{[l|link]}}

• Show information about a specific network interface:

ip {{[l|link]}} {{[sh|show]}} {{ethN}}

• Bring a network interface up or down:

sudo ip {{[l|link]}} {{[s|set]}} {{ethN}} {{up|down}}

• Give a meaningful name to a network interface:

sudo ip {{[l|link]}} {{[s|set]}} {{ethN}} {{[al|alias]}} "{{LAN Interface}}"

• Change the MAC address of a network interface:

sudo ip {{[l|link]}} {{[s|set]}} {{ethN}} {{[a|address]}} {{ff:ff:ff:ff:ff:ff}}

• Change the MTU size for a network interface to use jumbo frames:

sudo ip {{[l|link]}} {{[s|set]}} {{ethN}} mtu {{9000}}

• Set the promisc mode status of a device:

sudo ip {{[l|link]}} {{[s|set]}} {{ethN}} promisc {{on|off}}