* fix(backend): reuse ports

* fixed iptables duplicated entries

issue #1429

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* Fix spice password (#1460)

fix(backend): set spice password

* refactor(test): skip tun devices
* refactor(backend): allow set ip to null

Co-authored-by: frankiejol <frankie@telecos.upc.edu>
Co-authored-by: ssantos <ssantos@web.de>