<div dir="ltr">Yes, except that it <b>does not work</b>. As you can see below, libnss-libvirt is installed and configured, but the VM "KVM-Ubuntu-GNS3-Server-17.04" is not reachable through its DNS name.<div><br></div><div><div># apt-cache policy libnss-libvirt</div><div>libnss-libvirt:</div><div> Installed: 3.0.0-4</div></div><div>...</div><div><div># cat /etc/nsswitch.conf </div><div>passwd: compat<br></div><div>group: compat</div><div>shadow: compat</div><div><br></div><div>hosts:<span style="white-space:pre"> </span>files libvirt libvirt_guest mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] dns</div><div>networks: files</div><div><br></div><div>protocols: db files</div><div>services: db files</div><div>ethers: db files</div><div>rpc: db files</div><div><br></div><div>netgroup: nis</div></div><div><br></div><div><div># systemctl status libvirtd</div><div>● libvirtd.service - Virtualization daemon</div><div> Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)</div><div> Active: active (running) since Fri 2017-06-16 11:44:59 CEST; 11min ago</div><div> Docs: man:libvirtd(8)</div><div> <a href="http://libvirt.org">http://libvirt.org</a></div><div> Main PID: 9448 (libvirtd)</div><div> CPU: 1.790s</div><div> CGroup: /system.slice/libvirtd.service</div><div> ├─ 5556 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/virtual-mgt-5.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper</div><div> ├─ 5557 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/virtual-mgt-5.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper</div><div> ...</div><div> ├─ 8805 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper</div><div> ├─ 8806 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper</div><div> ├─ 9448 /usr/sbin/libvirtd</div><div> └─15116 qemu-system-x86_64 -enable-kvm -name guest=KVM-Ubuntu-GNS3-Server-17.04,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/</div><div><br></div><div>...</div><div>Jun 16 11:55:14 samsung-ubuntu dnsmasq-dhcp[8805]: DHCPREQUEST(virbr0) 192.168.122.124 52:54:00:03:9f:9f<br></div><div>Jun 16 11:55:14 samsung-ubuntu dnsmasq-dhcp[8805]: DHCPACK(virbr0) 192.168.122.124 52:54:00:03:9f:9f KVM-Ubuntu-GNS3-Server-17</div><div># ping KVM-Ubuntu-GNS3-Server-17.04</div><div>ping: KVM-Ubuntu-GNS3-Server-17.04: Name or service not known</div><div># ping <a href="http://KVM-Ubuntu-GNS3-Server-17.04.actionmystique.net">KVM-Ubuntu-GNS3-Server-17.04.actionmystique.net</a></div><div>ping: <a href="http://KVM-Ubuntu-GNS3-Server-17.04.actionmystique.net">KVM-Ubuntu-GNS3-Server-17.04.actionmystique.net</a>: Name or service not known</div><div># ping 192.168.122.124</div><div>PING 192.168.122.124 (192.168.122.124) 56(84) bytes of data.</div><div>64 bytes from <a href="http://192.168.122.124">192.168.122.124</a>: icmp_seq=1 ttl=64 time=0.181 ms</div><div>64 bytes from <a href="http://192.168.122.124">192.168.122.124</a>: icmp_seq=2 ttl=64 time=0.165 ms</div></div><div><br></div><div>A few possible explanations for that issue are:</div><div>- something is not configured correctly</div><div>- there is an incompatibility with NetworkManager</div><div>- there is a bug with libnss-libvirt</div><div>- I'm missing something</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jun 16, 2017 at 10:49 AM, Michal Privoznik <span dir="ltr"><<a href="mailto:mprivozn@redhat.com" target="_blank">mprivozn@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On 06/10/2017 08:53 PM, jean-christophe manciot wrote:<br> > Hello everyone,<br> ><br> > I have multiple virtual networks defined on my Server:<br> > # virsh net-list --all<br> > Name State Autostart Persistent<br> > ------------------------------<wbr>----------------------------<br> > default active yes yes<br> > ...<br> > virtual-mgt-5 active yes yes<br> > ...<br> ><br> > When a VM is started on one of them with an interface which needs the<br> > dnsmasq DHCP server to get its IP address/len, it remains inaccessible with<br> > the FQDN once the IP information is acquired.<br> ><br> > The default values are used for each dnsmasq instance:<br> > ● libvirtd.service - Virtualization daemon<br> > Loaded: loaded (/lib/systemd/system/libvirtd.<wbr>service; enabled; vendor<br> > preset: enabled)<br> > Active: active (running) since Sat 2017-06-10 19:48:58 CEST; 3ms ago<br> > Docs: man:libvirtd(8)<br> > <a href="http://libvirt.org" rel="noreferrer" target="_blank">http://libvirt.org</a><br> > Main PID: 25365 (libvirtd)<br> > Tasks: 35 (limit: 4915)<br> > Memory: 27.1M<br> > CPU: 28ms<br> > CGroup: /system.slice/libvirtd.service<br> > ├─22262 /usr/sbin/dnsmasq<br> > --conf-file=/var/lib/libvirt/<wbr>dnsmasq/default.conf --leasefile-ro<br> > --dhcp-script=/usr/lib/<wbr>libvirt/libvirt_leaseshelper<br> > ├─22263 /usr/sbin/dnsmasq<br> > --conf-file=/var/lib/libvirt/<wbr>dnsmasq/default.conf --leasefile-ro<br> > --dhcp-script=/usr/lib/<wbr>libvirt/libvirt_leaseshelper<br> > ...<br> > ├─24061 /usr/sbin/dnsmasq<br> > --conf-file=/var/lib/libvirt/<wbr>dnsmasq/virtual-mgt-5.conf --leasefile-ro<br> > --dhcp-script=/usr/lib/<wbr>libvirt/libvirt_leaseshelper<br> > ├─24062 /usr/sbin/dnsmasq<br> > --conf-file=/var/lib/libvirt/<wbr>dnsmasq/virtual-mgt-5.conf --leasefile-ro<br> > --dhcp-script=/usr/lib/<wbr>libvirt/libvirt_leaseshelper<br> > ...<br> > ├─25365 /usr/sbin/libvirtd<br> > └─25384 /usr/sbin/dnsmasq --help<br> ><br> > I wonder whether the option "--leasefile-ro" gets in the way or not: there<br> > must be a key=value in /etc/libvirt/qemu/networks/<<wbr>virtual_network>.xml to<br> > enable this behavior, but could not find it in the Network XML format<br> </div></div>> <<a href="https://libvirt.org/formatnetwork.html" rel="noreferrer" target="_blank">https://libvirt.org/<wbr>formatnetwork.html</a>>.<br> <br> The --leasefile-ro argument is added unconditionally, just like<br> --dhcp-script. If you want to do name translation, either have static IP<br> addresses and edit the hosts file, or use NSS module:<br> <br> <a href="https://libvirt.org/nss.html" rel="noreferrer" target="_blank">https://libvirt.org/nss.html</a><br> <span class="HOEnZb"><font color="#888888"><br> Michal<br> </font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Jean-Christophe</div> </div>