I revised the ip status and decided to reinstall the image directly under
zPDT. I now have access using the virtual tap device on 10.1.1.x network. I
also has a static (can be dynamic) configured NIC on the driving system.
The manuals are quit clear on how to configure z/os TCPIP to use the second
OSA. THe real NIC has an IP address, but it is known to the Centos os and
it doesn;t forward it any any way to the SESE image. What I need is a clear
explanation how to define a NAT (or any other routing) from the driving
system (Centos 7) to the SLES 12 image running under zPDT. the real OSA
card acts like a router, so there is no problem, but I can't understand how
it work with zPDT.

Can someone shed some light on this?

ITschak

On Wed, Mar 1, 2017 at 10:45 PM, Mark Post <mp...@suse.com> wrote:

> >>> On 2/28/2017 at 02:04 AM, Itschak Mugzach <imugz...@gmail.com> wrote:
> > Hi Mark. Tcpdump taken on the virtual machine guest. Dhcp has no evidence
> > in log. Firewalla aee down both sides aa well aa iptables on centoa side.
>
> If you're not able to see any traffic on the host that is coming from the
> guest, then it sounds like something is wrong with the bridging of the
> network between the host and the guest.  That sounds more like a zPDT
> setup/configuration problem than anything.
>
> The last thing I would try is to manually configure the IP address and
> default route that the DHCP server would normally hand out, and see if you
> can ping the default gateway from the guest.  If that doesn't work, then
> the problem isn't in the Linux guest.
>
>
> Mark Post
>
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--
ITschak Mugzach
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