graphic: 0.934
x86: 0.888
device: 0.836
network: 0.812
performance: 0.750
semantic: 0.592
boot: 0.558
peripherals: 0.511
files: 0.487
debug: 0.484
socket: 0.457
vnc: 0.448
TCG: 0.405
PID: 0.380
mistranslation: 0.361
kernel: 0.343
register: 0.315
risc-v: 0.314
permissions: 0.300
arm: 0.259
hypervisor: 0.252
architecture: 0.242
ppc: 0.238
VMM: 0.219
user-level: 0.200
i386: 0.197
virtual: 0.129
KVM: 0.090
assembly: 0.022

qemu hangs on start with a bridged NIC
Description of problem:
qemu hangs on start with a bridged NIC. And there is no difference exists the bridge or not. At the same with a user NIC (`-nic user`) everything works flawlessly. Also I tried to add `-enable-kvm` key and had no luck.
Steps to reproduce:
1. Run qemu with the specified command line.
Additional information:
I ran the strace: `strace -s 1024 -tt -ff -y -o qemu_bridge -- qemu-system-x86_64 -nic bridge`
Here are the logs: [qemu-bridge-strace.zip](/uploads/ecf8a2ba9133279fdd6f88fda5dd9ff3/qemu-bridge-strace.zip)