1# 2# 802.1d Ethernet Bridging 3# 4 5config BRIDGE 6 tristate "802.1d Ethernet Bridging" 7 select LLC 8 select STP 9 depends on IPV6 || IPV6=n 10 ---help--- 11 If you say Y here, then your Linux box will be able to act as an 12 Ethernet bridge, which means that the different Ethernet segments it 13 is connected to will appear as one Ethernet to the participants. 14 Several such bridges can work together to create even larger 15 networks of Ethernets using the IEEE 802.1 spanning tree algorithm. 16 As this is a standard, Linux bridges will cooperate properly with 17 other third party bridge products. 18 19 In order to use the Ethernet bridge, you'll need the bridge 20 configuration tools; see <file:Documentation/networking/bridge.txt> 21 for location. Please read the Bridge mini-HOWTO for more 22 information. 23 24 If you enable iptables support along with the bridge support then you 25 turn your bridge into a bridging IP firewall. 26 iptables will then see the IP packets being bridged, so you need to 27 take this into account when setting up your firewall rules. 28 Enabling arptables support when bridging will let arptables see 29 bridged ARP traffic in the arptables FORWARD chain. 30 31 To compile this code as a module, choose M here: the module 32 will be called bridge. 33 34 If unsure, say N. 35 36config BRIDGE_IGMP_SNOOPING 37 bool "IGMP/MLD snooping" 38 depends on BRIDGE 39 depends on INET 40 default y 41 ---help--- 42 If you say Y here, then the Ethernet bridge will be able selectively 43 forward multicast traffic based on IGMP/MLD traffic received from 44 each port. 45 46 Say N to exclude this support and reduce the binary size. 47 48 If unsure, say Y. 49