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+network: 0.986
+virtual: 0.941
+graphic: 0.762
+device: 0.604
+semantic: 0.527
+boot: 0.506
+performance: 0.480
+PID: 0.466
+register: 0.433
+files: 0.421
+permissions: 0.392
+VMM: 0.381
+mistranslation: 0.378
+vnc: 0.320
+assembly: 0.303
+debug: 0.287
+TCG: 0.242
+architecture: 0.238
+socket: 0.216
+risc-v: 0.189
+user-level: 0.183
+i386: 0.183
+peripherals: 0.173
+hypervisor: 0.139
+ppc: 0.134
+x86: 0.113
+kernel: 0.091
+KVM: 0.074
+arm: 0.048
+
+Network failed in qemu-7.2.0
+Description of problem:
+After I created and installed Ubuntu 20.04 img in qemu virtual machine from Ubuntu 20.04 iso, I found that the network could not work normally, the network settings wasn't right yet.
+Steps to reproduce:
+1. Download the source code of qemu-7.2.0 using command "wget https://download.qemu.org/qemu-7.2.0.tar.xz";
+2. Untar using command "tar Jxvf qemu-7.2.0.tar.xz";
+3. Configure with command "./configure --target-list=x86_64-softmmu" under root of qemu source code;
+4. Build with command "make";
+5. Install with command "make install" or "sudo make install";
+5. Create image with command "qemu-img create -f qcow2 Ubuntu2004.img 40G";
+5. Launch and install guest with ubuntu 20.04 iso using command "qemu-system-x86_64 -enable-kvm -m 8G -smp 4 -boot once=d -cdrom ../iso_images/Ubuntu-20.04.5-desktop-amd.iso -drive file=./Ubuntu2004.img -device ac97";
+6. After system installed, launch guest with command "qemu-system-x86_64 -enable-kvm -m 8G -smp 4 -drive file=./Ubuntu2004.img -device ac97"
+Additional information:
+1. When I used qemu version 7.1.0, that is qemu-7.1.0, and go through the same steps above, then the network worked normally, and the network setting was right.
+2. Windows images from Windows iso(s) had the same phenomenon.