1 # SPDX-License-Identifier: GPL-2.0-only
3 # 802.1d Ethernet Bridging
7 tristate "802.1d Ethernet Bridging"
10 depends on IPV6 || IPV6=n
12 If you say Y here, then your Linux box will be able to act as an
13 Ethernet bridge, which means that the different Ethernet segments it
14 is connected to will appear as one Ethernet to the participants.
15 Several such bridges can work together to create even larger
16 networks of Ethernets using the IEEE 802.1 spanning tree algorithm.
17 As this is a standard, Linux bridges will cooperate properly with
18 other third party bridge products.
20 In order to use the Ethernet bridge, you'll need the bridge
21 configuration tools; see <file:Documentation/networking/bridge.rst>
22 for location. Please read the Bridge mini-HOWTO for more
25 If you enable iptables support along with the bridge support then you
26 turn your bridge into a bridging IP firewall.
27 iptables will then see the IP packets being bridged, so you need to
28 take this into account when setting up your firewall rules.
29 Enabling arptables support when bridging will let arptables see
30 bridged ARP traffic in the arptables FORWARD chain.
32 To compile this code as a module, choose M here: the module
33 will be called bridge.
37 config BRIDGE_IGMP_SNOOPING
38 bool "IGMP/MLD snooping"
43 If you say Y here, then the Ethernet bridge will be able selectively
44 forward multicast traffic based on IGMP/MLD traffic received from
47 Say N to exclude this support and reduce the binary size.
51 config BRIDGE_VLAN_FILTERING
57 If you say Y here, then the Ethernet bridge will be able selectively
58 receive and forward traffic based on VLAN information in the packet
59 any VLAN information configured on the bridge port or bridge device.
61 Say N to exclude this support and reduce the binary size.
70 If you say Y here, then the Ethernet bridge will be able to run MRP
71 protocol to detect loops
73 Say N to exclude this support and reduce the binary size.
81 If you say Y here, then the Ethernet bridge will be able to run CFM
82 protocol according to 802.1Q section 12.14
84 Say N to exclude this support and reduce the binary size.