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[Xen-users] 5+ interface fails -- Ubuntu 16.04, Xen 4.6

I have 6 bridge interfaces in my "vif" statement. This worked fine with Ubuntu 12.04 / Xen 4.1.

I've upgraded to Ubuntu 16.04 / Xen 4.6. Now when I start the DomU, I get the following in qemu-dm-hostname.log:

"qemu: hardware error: xen: failed to populate ram at..."

If I reduce the number of interfaces in my "vif" statement to 4, everything is fine (but that doesn't solve anything for me).

I see posts from earlier Xen versions (4.4??) where people had success setting: device_model_version = "qemu-xen-traditional". But... I get "device model /usr/lib/xen-4.6/bin/qemu-dm is not executable: No such file or directory". It seems qemu-dm has not be available in Ubuntu since "trusty" (which had it in xen-utils-4.4).

Any suggestions??
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