socket: 0.980 network: 0.964 device: 0.847 performance: 0.788 kernel: 0.780 graphic: 0.760 architecture: 0.702 x86: 0.659 mistranslation: 0.595 PID: 0.578 peripherals: 0.566 register: 0.565 semantic: 0.547 ppc: 0.536 user-level: 0.524 permissions: 0.473 vnc: 0.430 debug: 0.387 boot: 0.384 risc-v: 0.374 virtual: 0.348 i386: 0.341 hypervisor: 0.302 arm: 0.301 assembly: 0.224 VMM: 0.164 TCG: 0.135 files: 0.117 KVM: 0.052 socket network not working The socket network type is no longer working in 2.8.0. When trying to establish a network between 2 qemu instances: The listening host: qemu-system-x86_64 -netdev socket,id=in0,listen=127.0.0.1:9999 -device virtio-net-pci,netdev=in0 works fine, but for the second one: qemu-system-x86_64 -netdev socket,id=in0,connect=127.0.0.1:9999 -device virtio-net-pci,netdev=in0 It fails with: qemu-system-x86_64: -device virtio-net-pci,netdev=in0: Property 'virtio-net-device.netdev' can't find value 'in0' netstat shows a new connection to port 9999 in time_wait state every time. host: kernel 4.4.38, 64bits. It was working fine with previous version. Works for me with the current QEMU master branch... can you still reproduce the issue with the latest version of QEMU (either v4.2 or the master branch)? [Expired for QEMU because there has been no activity for 60 days.]