wip/bridge-utils 1.0.4 NetBSD

Ethernet bridging is a way to connect networks together to form a larger network. The standard for bridging is ANSI/IEEE 802.1d which downloaded from IEEE get 802 site. A bridge is a way to connect two separate network segments together in a protocol independent way. Packets are forwarded based on Ethernet address, rather than IP address (like a router). Since forwarding is done at Layer 2, all protocols can go transparently through a bridge.