[OpenIndiana-discuss] etherstub and bridge

[Anil Jangity]

What I am really trying to do is, isolate the zone, but also at the same time have it be able to talk the outside world. Going over the "real link" means it would see all the wire traffic (broadcasts etc... from the rest of the network, it isn't isolated).

There are various examples out there that do NAT'ing (assigning RFC 1918 address on the non-global zone and then doing NAT'ing on the global zone) but I would much prefer not to do that and use real routable IP addresses in the zone, but still be able to virtualize and go over it's own "virtual wire".

How would I route this traffic properly, if at all?


On Feb 25, 2012, at 10:43 AM, James Carlson wrote:



> On 2/24/12 8:06 PM, Anil Jangity wrote:
>> I tried to setup a etherstub and a vnic. I then tried to setup a bridge between that and the physical interface, as follows:
>> 
>> LINK        CLASS     MTU    STATE    BRIDGE     OVER
>> igb0        phys      1500   up       zbridge    --
>> igb1        phys      1500   up       --         --
>> workswitch0 etherstub 1500   unknown  zbridge    --
>> work0       vnic      1500   unknown  --         workswitch0
>> zbridge0    bridge    1500   up       --         workswitch0 igb0
> 
> Perhaps a dumb question here, but why would you do that?  The whole
> point of an etherstub object is that it's not connected to the outside
> world.  And if you want a connection to the outside world, why not just
> create the vnic on top of a real link?
> 
> That aside, I think you might get further using 'dladm create-simnet'
> rather than an etherstub.  A simnet is a simulated Ethernet interface.
> 
> As for the "STATE unknown" bit, I believe that's because etherstubs
> don't have physical links and thus don't have physical link status.
> It's probably harmless.
> 
> -- 
> James Carlson         42.703N 71.076W         <carlsonj at workingcode.com>
> 
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