![]() The id option gives the name by which the virtual network device and the network backend are associated with each other. There are a number of network backends to choose from depending on your environment. Network Backends How to create a network backend? QEMU Networking on bsdwiki, showing used networking principles and dealing with BSD hosts.QEMU Networking on, mainly dealing with Linux hosts.Note - As this page is probably very brief or even incomplete you might find these pages rather useful: Don't try to use ping to test your QEMU network configuration! Note - if you are using the (default) SLiRP user networking, then ping (ICMP) will not work, though TCP and UDP will. ![]() (Forgetting to specify the backend or the network device will give a warning message such as "Warning: netdev mynet0 has no peer", "Warning: hub 0 is not connected to host network" or "Warning: hub 0 with no nics" the VM will then boot but will not have functioning networking.) Note - if you specify any networking options on the command line (via -net or -netdev) then QEMU will require you to provide options sufficient to define and connect up both parts. By default QEMU will create a SLiRP user network backend and an appropriate virtual network device for the guest (eg an E1000 PCI card for most x86 PC guests), as if you had typed -net nic -net user on your command line. There are a range of options for each part.
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