Macvlan network

Macvlan is a virtual LAN that you can use if you want to assign several IP addresses to the same network interface, basically splitting up the network interface into several sub-interfaces with their own IP addresses. You can then assign IP addresses based on the randomly generated MAC addresses.

The macvlan network type allows to specify presets to use when connecting instances to a parent interface. In this case, the instance NICs can simply set the network option to the network they connect to without knowing any of the underlying configuration details.

Note

If you are using a macvlan network, communication between the LXD host and the instances is not possible. Both the host and the instances can talk to the gateway, but they cannot communicate directly.

Configuration options

The following configuration key namespaces are currently supported for the macvlan network type:

• maas (MAAS network identification)
• user (free-form key/value for user metadata)

Note

LXD uses the CIDR notation (opens in a new tab) where network subnet information is required, for example, 192.0.2.0/24 or 2001:db8::/32. This does not apply to cases where a single address is required, for example, local/remote addresses of tunnels, NAT addresses or specific addresses to apply to an instance.

The following configuration options are available for the macvlan network type:

gvrp

Whether to use GARP VLAN Registration Protocol

Key: gvrp

Type: bool

Default: false

Scope: global

This option specifies whether to register the VLAN using the GARP VLAN Registration Protocol.

maas.subnet.ipv4

MAAS IPv4 subnet to register instances in

Key: maas.subnet.ipv4

Type: string

Condition: IPv4 address; using the network property on the NIC

Scope: global

maas.subnet.ipv6

MAAS IPv6 subnet to register instances in

Key: maas.subnet.ipv6

Type: string

Condition: IPv4 address; using the network property on the NIC

Scope: global

mtu

MTU of the new interface

Key: mtu

Type: integer

Scope: global

parent

Parent interface to create macvlan NICs on

Key: parent

Type: string

Scope: local

user.*

User-provided free-form key/value pairs

Key: user.*

Type: string

Scope: global

vlan

VLAN ID to attach to

Key: vlan

Type: integer

Scope: global