Thanks!  Putting the vSwitch into promiscuous mode did the trick.

What’s really strange is that it a VM on host1 would work, but not host2 or 
host3, until I made that change.  Yet, none of them were set to promiscuous.

Zane



> On Jun 7, 2019, at 8:36 AM, Hittner, David T [US] (MS) 
> <david.hitt...@ngc.com> wrote:
> 
> VMware has put some serious security enhancements on network ports in the 
> last few releases to prevent spoofing and otherwise tighten network security 
> to best practices.
> 
> You might try enabling promiscuous mode on the vSwitch that you have the VM 
> connected to and see if that solves the "two mac addresses coming from the 
> same network port" problem.
> The vSwitch promiscuous mode is set to "reject" by default.
> 
> David
> 
> -----Original Message-----
> From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Zane Healy
> Sent: Thursday, June 6, 2019 4:21 PM
> To: Mark Pizzolato <m...@infocomm.com>
> Cc: simh <simh@trailing-edge.com>
> Subject: EXT :Re: [Simh] VAX networking issue
> 
> 
>> On Jun 6, 2019, at 2:11 PM, Mark Pizzolato <m...@infocomm.com> wrote:
> 
>> The above output is suspicious since it doesn't say that the XQ device 
>> has been attached to any interface.
>> 
>> What is the output of SHOW ETHER on this simulator?
>> Are you running as ROOT (which is required for network functionality on 
>> Linux unless you are using VDE Ethernet)?
>> Is the VM Hypervisor you're running under configured to pass arbitrary MAC 
>> addresses out of that VM?
>> 
>> Apart from these considerations relating to basic packet capabilities, once 
>> you have any networking functionality, you may encounter a problem that has 
>> been reported on some Linux systems.  You're not encountering this now, but 
>> if you do, you should add the following line to your configuration file:
>>      sim> SET CLOCK NOCATCHUP
>> 
>> The problem that is not always observed will be fixed soon and the SET CLOCK 
>> NOCATCHUP will no longer be necessary.
>> 
>> - Mark
>> 
> 
> I just figured out that this is a VMware issue.  I’m going to have to do some 
> checking.  I have a 3 system VMware cluster.  Two of the systems are HP SFF 
> PC’s, the third is an HP DL380 G7.  I just migrated the VM over to one of the 
> SFF systems, and it works.  The SIMH/VAX is now a member of the cluster.
> 
> I was unaware of SHOW ETHER, that should help me see what’s going on.  I’ll 
> shut the VM down and migrate it back to the DL380.
> 
> Zane
> 
> 
> 
> 
> _______________________________________________
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> Simh@trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh

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