Bridges

A bridge joins several interfaces into one broadcast domain, like a switch inside the gateway.

Where: Connectivity > Interfaces & network > Interfaces & network tab > + Add Interface > Bridge.

Creating a bridge

Field	Meaning
Name	e.g. bridge0
Members	The interfaces to join
Enable STP	Spanning tree, if the bridge could form a loop with other switching
Description	Optional label

Click Create Bridge.

A bridge has no address

A bridge carries no address of its own; OpenBSD refuses one. To give the bridged network an address, add a virtual interface (vether) to the bridge and address that.

You rarely need to build this by hand: a LAN created on the Local networks tab is a vether in a bridge, and its ports are attached and detached there. See Local networks.