@option{-net} option is specified, a single NIC is created.
@item -net user[,vlan=n]
-Use the user mode network stack which requires not administrator
+Use the user mode network stack which requires no administrator
priviledge to run. This is the default if no @option{-net} option is
specified.
Example:
@example
# launch a first QEMU instance
-qemu linux.img -net nic -net socket,listen=:1234
+qemu linux.img -net nic,macaddr=52:54:00:12:34:56 -net socket,listen=:1234
# connect the VLAN 0 of this instance to the VLAN 0 of the first instance
-qemu linux.img -net nic -net socket,connect=127.0.0.1:1234
+qemu linux.img -net nic,macaddr=52:54:00:12:34:57 -net socket,connect=127.0.0.1:1234
@end example
@item -net none