Messages in this thread | | | Date | Thu, 23 Jan 2003 12:41:53 -0700 | From | "Kevin P. Fleming" <> | Subject | Re: is it possible to bridge virtual devices (ie. a GRE tunnel)? |
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Chris Friesen wrote: > > I want to set up two physically separate LANs with the same network > address and logically bridge them using some kind of tunnel over an IP > network. > > I was hoping to somehow combine bridging with GRE tunnels in the kernel > to accomplish this, but I haven't been able to find out for sure if the > current kernel bridging code can handle a tunnel device as one of the > bridge elements. > > Can anyone give the definitive answer for this? > > Thanks, > > Chris >
I don't believe you'd be able to use GRE tunnels, as they are not an "Ethernet" type of tunnel.
However, I run a network with three physical locations, bridged over TAP-type tunnels using VTUN (vtun.sourceforge.net). These are Ethernet-type tunnel devices, so the bridge code just sees them as if it was any other Ethernet network interface.
In addition, I use ebtables to control what traffic gets bridged across the tunnels, so extraneous broadcast/multicast traffic stays where it is supposed to.
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