Other Types

Besides wired, wireless and VPN interfaces, there are also some other, virtual interfaces, as well as some miscellaneous interface-related. These options can be found under Interfaces ‣ Other types. This document briefly explains these options.

Bridge

Bridging allows to create a connection between separate networks, allow traffic on network A destined for network B (where both networks are connected to your OPNsense device) to reach it via this bridge. Note that this does not include DHCP services—this needs to set using DHCP relaying.

GIF

GIF (gif(4), Generic Tunnel Interface) can be used to tunnel IPv6 via IPv4 connections. A common use for this are the IPv6 tunnel of Hurricane Electric (he.net).

GRE

GRE (gre(4), Generic Routing Encapsulation) is used to create a virtual point-to-point connection, through which encapsulated packages can be sent. This can be used to utilise protocols between devices over a connection that does not normally support these protocols.

LAGG

LAGG (lagg(4)) allows for link aggregation, bonding and fault tolerance. This works best if your network switches support. Only unassigned interfaces can be added to LAGG. More information about LAGG can be found in the FreeBSD manual.

VLAN

VLANs (Virtual LANs) can be used to segment a single physical network into multiple virtual networks. This can be done for QoS purposes, among other things. For this reason, most ISP-issued IPTV devices utilise VLANs.