Bug#809337: imvirt: Unstable output, imvirt sometimes detects "Unknown" instead of "KVM"

[Alexander Barton]

(Ok, sorry, I faild to use reportbug correctly ...)

Running "imvirt" multiple times results in unstable and incorrect output
here:

        $ imvirt
        Unknown
        $ imvirt
        KVM
        $ imvirt
        Unknown
        $ imvirt
        KVM
        $ imvirt
        KVM
        $ imvirt
        Unknown

The correct answer is "KVM" ...

Any idea why this happens or how I can debug this further?

Thanks!
Alex

-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages imvirt depends on:
ii  dpkg            1.17.26
ii  libimvirt-perl  0.9.6-1
ii  perl            5.20.2-3+deb8u1

imvirt recommends no packages.

imvirt suggests no packages.

-- no debconf information