<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="WordSection1"> <p>I got the network to partially work. (DNS resolves and I can get to the host, which is all I wanted anyway.) The problem was that I needed to be able to run as a normal user. Which was a matter of uncommenting this line in file /etc/libvirt/libvirt.conf: <br> <br> <o:p></o:p></p> <p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">uri_default = "qemu:///system"<o:p></o:p></span></p> <p><o:p> </o:p></p> <p>And perhaps copying that file to <o:p></o:p></p> <p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">~/.config/libvirt/libvirt.conf<o:p></o:p></span></p> <p><o:p> </o:p></p> <p>As seen in this stack overflow question:<br> <a href="https://serverfault.com/questions/803283/how-do-i-list-virsh-networks-without-sudo">https://serverfault.com/questions/803283/how-do-i-list-virsh-networks-without-sudo</a><o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal" style="margin-left:.5in"><b>From:</b> Leek, Jim <leek2@llnl.gov> <br> <b>Sent:</b> Wednesday, July 14, 2021 6:49 AM<br> <b>To:</b> Michal Prívozník <mprivozn@redhat.com>; virt-tools-list@redhat.com<br> <b>Subject:</b> Re: RHEL 8 virt-manager with qemu-4.2.0, can't connect network<o:p></o:p></p> </div> </div> <p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">It turns out that I had to run virsh dumpxml with sudo, now it works. The requested <interface> block:<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <interface type='network'> <o:p></o:p></span></p> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <mac address='6c:2b:59:e9:44:50'/><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <source network='default' portid='8942017c-ace9-4c79-bfc8-3919197c6269' bridge='virbr0'/><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <target dev='vnet0'/><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <model type='virtio'/><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <alias name='net0'/><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> <address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/><o:p></o:p></span></p> </div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> </interface><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div class="MsoNormal" align="center" style="margin-left:.5in;text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="divRplyFwdMsg"> <p class="MsoNormal" style="margin-left:.5in"><b><span style="color:black">From:</span></b><span style="color:black"> Leek, Jim <<a href="mailto:leek2@llnl.gov">leek2@llnl.gov</a>><br> <b>Sent:</b> Monday, July 12, 2021 11:40 AM<br> <b>To:</b> Michal Prívozník <<a href="mailto:mprivozn@redhat.com">mprivozn@redhat.com</a>>; <a href="mailto:virt-tools-list@redhat.com">virt-tools-list@redhat.com</a> <<a href="mailto:virt-tools-list@redhat.com">virt-tools-list@redhat.com</a>><br> <b>Subject:</b> Re: RHEL 8 virt-manager with qemu-4.2.0, can't connect network</span> <o:p></o:p></p> <div> <p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p> </div> </div> <div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">Host ifconfig. The only strange thing here is virbr0, which has the same IP address as the virbr0 on the guest, and I'm not really sure what it does. I did have to add a bridge and TAP interface for a different QEMU run, but that was on a different IP address, so I don't think it's related? (</span><code><span style="font-size:10.0pt;color:black">ifconfig br0 192.168.2.1 netmask 255.255.255.0 promisc up; ip tuntap add tap0 mode tap; ifconfig tap0 192.168.2.2/30</span></code><span style="font-size:12.0pt;color:black"> ) I think that go removed on a reboot. Anyway, here's the Host ifconfig. :<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 <o:p></o:p></span></p> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> inet 10.251.13.178 netmask 255.255.252.0 broadcast 10.251.15.255<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> inet6 fe80::bbed:c35d:746a:309f prefixlen 64 scopeid 0x20<link><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> ether 6c:2b:59:e9:44:49 txqueuelen 1000 (Ethernet)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX packets 37451448 bytes 18352095515 (17.0 GiB)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX errors 15 dropped 130 overruns 0 frame 9<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX packets 110265614 bytes 147787762125 (137.6 GiB)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> device interrupt 16 memory 0x90380000-903a0000 <o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> inet 127.0.0.1 netmask 255.0.0.0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> inet6 ::1 prefixlen 128 scopeid 0x10<host><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> loop txqueuelen 1000 (Local Loopback)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX packets 539825 bytes 98281872 (93.7 MiB)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX errors 0 dropped 0 overruns 0 frame 0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX packets 539825 bytes 98281872 (93.7 MiB)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> ether 52:54:00:40:58:59 txqueuelen 1000 (Ethernet)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX packets 0 bytes 0 (0.0 B)<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> RX errors 0 dropped 0 overruns 0 frame 0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX packets 66 bytes 10560 (10.3 KiB)<o:p></o:p></span></p> </div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="color:black">> Also, can you please post the <interface/> part of the 'virsh dumpxml'?</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="color:black">Sorry, I couldn't figure this one out:</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">$ virsh dumpxml<br> error: command 'dumpxml' requires <domain> option<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"># So which domain?<o:p></o:p></span></p> </div> <p class="MsoNormal" style="margin-left:.5in">$ virsh list --all <o:p></o:p></p> <div> <p class="MsoNormal" style="margin-left:.5in"> Id Name State<o:p></o:p></p> </div> <p class="MsoNormal" style="margin-left:.5in">--------------------<o:p></o:p></p> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">$<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"># there don't seem to be any domains? Even though the VM is currently running?<o:p></o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal" style="margin-left:.5in"><span style="font-size:12.0pt;color:black">Jim<o:p></o:p></span></p> </div> <div class="MsoNormal" align="center" style="margin-left:.5in;text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="x_divRplyFwdMsg"> <p class="MsoNormal" style="margin-left:.5in"><b><span style="color:black">From:</span></b><span style="color:black"> Michal Prívozník <<a href="mailto:mprivozn@redhat.com">mprivozn@redhat.com</a>><br> <b>Sent:</b> Monday, July 12, 2021 2:52 AM<br> <b>To:</b> Leek, Jim <<a href="mailto:leek2@llnl.gov">leek2@llnl.gov</a>>; <a href="mailto:virt-tools-list@redhat.com"> virt-tools-list@redhat.com</a> <<a href="mailto:virt-tools-list@redhat.com">virt-tools-list@redhat.com</a>><br> <b>Subject:</b> Re: RHEL 8 virt-manager with qemu-4.2.0, can't connect network</span> <o:p></o:p></p> <div> <p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p> </div> </div> <div> <div> <p class="MsoNormal" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:.5in"> Hey,<br> <br> On 7/10/21 2:49 AM, Leek, Jim wrote:<br> > This seems like it should be very easy, so I must be missing something,<br> > but I cannot get my guest to communicate with my host or with the<br> > internet. I really jsut need some way to get files across, the guest<br> > doesn't even need internet access.<br> > The host is RHEL 8.4, the guest is CentOS 8. <br> > Everything is installed from the yum repos, so it's all default, but my<br> > corporate IT environment is pretty locked down. So that might be related.<br> > I tried to use a shared drive, but apparently that is disabled in RHEL 8.<br> > By default the network is 'NAT' with virtio. <br> > Here's my guest ifconfig:<br> > enp8s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500<br> > ether 6c:2b:59:e9:44:50 txqueuelen 1000 (Ethernet)<br> > RX packets 38 bytes 4953 (4.8 KiB)<br> > RX errors 0 dropped 7 overruns 0 frame 0<br> > TX packets 0 bytes 0 (0.0 B)<br> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<br> > <br> > lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536<br> > inet 127.0.0.1 netmask 255.0.0.0<br> > inet6 ::1 prefixlen 128 scopeid 0x10<host><br> > loop txqueuelen 1000 (Local Loopback)<br> > RX packets 1840 bytes 159880 (156.1 KiB)<br> > RX errors 0 dropped 0 overruns 0 frame 0<br> > TX packets 1840 bytes 159880 (156.1 KiB)<br> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<br> > <br> > virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500<br> > inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255<br> > ether 52:54:00:a8:4e:b8 txqueuelen 1000 (Ethernet)<br> > RX packets 0 bytes 0 (0.0 B)<br> > RX errors 0 dropped 0 overruns 0 frame 0<br> > TX packets 0 bytes 0 (0.0 B)<br> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0<br> > <br> <br> I wonder what does your host ifconfig look like. I mean, 192.168.122.1<br> is the default IP address of the libvirt's network and this might<br> suggest that you have clashing addresses if the network on your host<br> uses the same range. Also, can you please post the <interface/> part of<br> the 'virsh dumpxml'?<br> <br> Michal<o:p></o:p></p> </div> </div> </div> </div> </body> </html>