What output do you get when you run: qemu-system-i386 -netdev help
It's likely that your binary has been compiled without "user" networking (aka. "slirp") support. If so, please use a binary that has "slirp" enabled instead. ** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1917161 Title: Parameter 'type' expects a netdev backend type Status in QEMU: Incomplete Bug description: When using QEMU on an M1 Mac with Mac OS 11.1, I see this error message when trying to enable networking for a guest: Parameter 'type' expects a netdev backend type Example command: qemu-system-i386 -m 700 -hda <Windows XP HD file> -netdev user,id=n0 -device rtl8139,netdev=n0 What should happen is networking should work when issuing the above command. What actually happens is QEMU exits immediately. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1917161/+subscriptions