Comment # 2 on bug 1171113 from pgnd _

upgraded to 6.3.0 pkgs from Virtualization,

    rpm -qa | egrep -i "libvirt-client-6|libvirt-daemon-6"
        libvirt-daemon-6.3.0-lp151.892.1.x86_64
        libvirt-client-6.3.0-lp151.892.1.x86_64
    virsh --version
        6.3.0

as before,

    virsh -c test:///default list
         Id   Name   State
        ----------------------
         1    test   running

    virsh -c test:///default sysinfo
        <sysinfo type='smbios'>
          <bios>
            <entry name='vendor'>LENOVO</entry>
            <entry name='version'>G4ETA1WW (2.61 )</entry>
            <entry name='date'>05/07/2014</entry>
            <entry name='release'>2.61</entry>
          </bios>
        </sysinfo>

and now, locally

    virsh -c xen:///system?socket=/var/run/libvirt/libvirt-sock sysinfo
        <sysinfo type='smbios'>
          <bios>
            <entry name='vendor'>American Megatrends Inc.</entry>
            <entry name='version'>3.2</entry>
            <entry name='date'>05/18/2018</entry>
            <entry name='release'>4.6</entry>
          </bios>
        ...

I haven't _yet_ managed to get virsh connection from a remote client to this
server working/tested; that's next.