Hello on Debian buster amd64 (4.19.67-2+deb10u2 (2019-11-11)) if start
multiple vms spice port 5900 on diverse ip want start same a bug previously
#863266
root@server:~# virsh start vm1
Domain vm1 started
root@server:~# virsh start vm2
error: Failed to start domain vm2
error: internal error: Failed to reserve port 5900
configuration file of vm1
<graphics type='spice' port='5900' autoport='no' listen='127.168.0.1'>
<listen type='address' address='127.168.0.1'/>
</graphics>
configuration file of vm2
<graphics type='spice' port='5900' autoport='no' listen='127.168.0.2'>
<listen type='address' address='127.168.0.2'/>
</graphics>