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A Red Hat training course is available for Red Hat Enterprise Linux User-space SLIRP stack

Setting the user-space SLIRP stack parameters provides a virtual LAN with NAT to the outside world. The virtual network has DHCP and DNS services and will give the guest virtual machine an IP addresses starting from The default router will be and the DNS server will be This networking is the only option for unprivileged users who need their guest virtual machines to have outgoing access.
The user-space SLIP stack parameters are defined in the following part of the domain XML::

    <interface type='user'/>
    <interface type='user'>
      <mac address="00:11:22:33:44:55"/>

Figure 20.39. Devices - network interfaces- User-space SLIRP stack