<div dir="ltr">Currently, I have two networks configured via xml:<br><br>virsh # net-dumpxml TestNetwork1<br><network connections='2'><br>  <name>TestNetwork1</name><br>  <uuid>a76f665a-0196-4edb-81b4-340944a6869c</uuid><br>
  <forward dev='p1p1' mode='nat'><br>    <nat><br>      <port start='1024' end='65535'/><br>    </nat><br>    <interface dev='p1p1'/><br>  </forward><br>
  <bridge name='virbr0' stp='on' delay='0'/><br>  <mac address='52:54:00:0b:e9:35'/><br>  <ip address='192.168.100.1' netmask='255.255.255.0'><br>    <dhcp><br>
      <range start='192.168.100.128' end='192.168.100.254'/><br>    </dhcp><br>  </ip><br></network><br><br>virsh # net-dumpxml default6<br><network connections='1'><br>
  <name>default6</name><br>  <uuid>6e57d831-f09e-4b33-950d-6d51c89f9786</uuid><br>  <forward mode='nat'/><br>  <bridge name='virbr3' stp='on' delay='0'/><br>
  <mac address='52:54:00:cb:c5:50'/><br>  <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'><br>    <dhcp><br>      <range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/><br>
    </dhcp><br>  </ip><br></network><br><br># brctl show<br><div>bridge name<span class="" style="white-space:pre">  </span>bridge id<span class="" style="white-space:pre">         </span>STP enabled<span class="" style="white-space:pre">       </span>interfaces</div>
<div>virbr0<span class="" style="white-space:pre">              </span>8000.5254000be935<span class="" style="white-space:pre"> </span>yes<span class="" style="white-space:pre">               </span>virbr0-nic</div><div><span class="" style="white-space:pre">                                                 </span>vnet0</div>
<div><span class="" style="white-space:pre">                                                    </span>vnet1</div><div>virbr3<span class="" style="white-space:pre">                </span>8000.525400cbc550<span class="" style="white-space:pre"> </span>yes<span class="" style="white-space:pre">               </span>virbr3-nic</div>
<div><span class="" style="white-space:pre">                                                    </span>vnet2</div><div><br></div><div>My queries are:</div><div>(i) For each interface that I attach to my guests, will a new vnetX (X=0,1,2,3,...) be created?</div><div>
(ii) Can two different active networks share the same bridge? Example, can the xml of two active networks have the same line <bridge name='virbr0' stp='on' delay='0'/> ?</div><div>(iii) If the answer for (ii) is false, how can I obtain the interface name for a given bridge name in libvirt?</div>
<br><br><br>-- <br>Nehal J Wani</div>