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:lastproofread: 2026-03-05
.. _pseudo-ethernet-interface:
#########################
MACVLAN (pseudo-Ethernet)
#########################
MACVLAN, or pseudo-Ethernet interfaces, operate as logical subinterfaces of
standard Ethernet interfaces. Each subinterface has a unique MAC address but
shares a single physical Ethernet port.
That allows the user to send packets from different source IPv4 or IPv6 addresses
using a different MAC address.
Pseudo-Ethernet interfaces behave like physical Ethernet interfaces. They
support IPv4 and IPv6 addressing, can obtain IP addresses through DHCP or
DHCPv6, and are mapped to a physical Ethernet port. They inherit
characteristics such as speed and duplex from their parent interface and can
be referenced like standard Ethernet interfaces once created.
Pseudo-Ethernet interfaces may not work in environments that require a
:abbr:`NIC (Network Interface Card)` to have only one MAC address.
This includes:
* VMware machines with default settings.
* Network switches that permit only a single MAC address.
* xDSL modems that learn the NIC's MAC address.
*************
Configuration
*************
Common interface configuration
==============================
.. cmdinclude:: /_include/interface-common-with-dhcp.txt
:var0: pseudo-ethernet
:var1: peth0
MACVLAN (pseudo-Ethernet) options
=================================
.. cfgcmd:: set interfaces pseudo-ethernet <interface> source-interface <ethX>
Assign a physical Ethernet interface to the specified pseudo-Ethernet interface.
VLAN
====
.. cmdinclude:: /_include/interface-vlan-8021q.txt
:var0: pseudo-ethernet
:var1: peth0
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