podman/docs/source/markdown/options/opt.md

####> This option file is used in: ####> podman network create, podman-network.unit.5.md.in ####> If file is edited, make sure the changes ####> are applicable to all of those. << if is_quadlet >>

Options=option

<< else >>

--opt, -o=option

<< endif >>

Set driver specific options.

All drivers accept the mtu, metric, no_default_route and options.

• mtu: Sets the Maximum Transmission Unit (MTU) and takes an integer value.
• metric Sets the Route Metric for the default route created in every container joined to this network. Accepts a positive integer value. Can only be used with the Netavark network backend.
• no_default_route: If set to 1, Podman will not automatically add a default route to subnets. Routes can still be added manually by creating a custom route using --route.

Additionally the bridge driver supports the following options:

• vlan: This option assign VLAN tag and enables vlan_filtering. Defaults to none.
• isolate: This option isolates networks by blocking traffic between those that have this option enabled.
• com.docker.network.bridge.name: This option assigns the given name to the created Linux Bridge
• com.docker.network.driver.mtu: Sets the Maximum Transmission Unit (MTU) and takes an integer value.
• vrf: This option assigns a VRF to the bridge interface. It accepts the name of the VRF and defaults to none. Can only be used with the Netavark network backend.
• mode: This option sets the specified bridge mode on the interface. Defaults to managed. Supported values:
  • managed: Podman creates and deletes the bridge and changes sysctls of it. It adds firewall rules to masquerade outgoing traffic, as well as setup port forwarding for incoming traffic using DNAT.
  • unmanaged: Podman uses an existing bridge. It must exist by the time you want to start a container which uses the network. There will be no NAT or port forwarding, even if such options were passed while creating the container.

The macvlan and ipvlan driver support the following options:

• parent: The host device which is used for the macvlan interface. Defaults to the default route interface.
• mode: This option sets the specified ip/macvlan mode on the interface.
  • Supported values for macvlan are bridge, private, vepa, passthru. Defaults to bridge.
  • Supported values for ipvlan are l2, l3, l3s. Defaults to l2.

Additionally the macvlan driver supports the bclim option:

• bclim: Set the threshold for broadcast queueing. Must be a 32 bit integer. Setting this value to -1 disables broadcast queueing altogether.