[Opensim-users] Problems with teleporting in grid mode from simulator instance to another instance?

[Chris]

I've recently set up a small test grid consisting of 6 simulator 
instances running on OS 0.9.1.0 (Master) in normal grid mode (not HG). 
Everything seems to be working except that on teleport to another region 
in another instance there is randomly a complete failure of the 
teleport. This happens upon communication to the destination region 
resulting in the person teleporting being instantly logged off the grid 
as soon as they attempted the teleport, and they may even look like 
they're missing attachments to depending on if the viewer teleport 
screen went away or not. In the ROBUST console there is "Got logout 
for... (name)" when this happens.

The instance and setup I used looks like this:
There are 4 more OpenSim instances aside from this but they follow the 
same pattern

                  (Server Hardware)
                                |
                         ROBUST
                                |
                         /            \
         OpenSim 1                OpenSim 2
           |           |                      |            |
   Region 1   Region 2     Region 3  Region 4


So for instance if I teleport from OpenSim 1, Region 1 to OpenSim 2, 
Region 4 the chance for disconnect can happen in this instance. It's not 
consistent; sometimes TP works but other times there is a instant 
complete disconnect of the user before the viewer even tried to get them 
to their destination, that is... there's no long wait at the teleport 
progress bar, it's pretty much instantly when they try to teleport. This 
happens both when trying TP within the LAN for myself that OS is setup 
on and also over WAN for other users. I'm not sure if this happens if 
one does say... OpenSim 1, Region 1 to OpenSim 1, Region 2. I haven't 
seen it so far; it's been from OpenSim 1 to OpenSim 2 that I see it 
happen on occasion.

I'm not sure why this would be happening, I've checked the access 
permissions for the destination regions and nothing's set up to deny 
anyone teleporting there. I've tried disabling antivirus and firewall to 
no avail. All instances are on the same server hardware along side 
ROBUST service; there is no communication to any other OS services 
outside of that server system.

Does anyone have any insight to why this is happening? I'm really at a 
loss for it at this point especially since coming from OS 0.8.x grid 
mode and haven't seen this teleport issue there (I did start from 
scratch .ini files when I set up 0.9.1.0).

Thank you!