Hi,
I'm not sure what is going on and not sure either how to debug this. I'm travelling tomorrow and I would really need to have my VM's network stack working while my host can also browse the internet. Basically, when I have my laptop on wired eth connection, QEMU networking works fine, but when I want to use the WiFi it doesn't work on both ends host/VM; dns queries don't get resolved, ping don't work and routing tables get messed up.
I have installed QEMU/KVM with virt-manager. One of the optional dependencies is dnsmasq so I also installed that, but is not working as it should. I've added libvirtd and dnsmasq to default runlevel on my OpenRC.
❯ sudo rc-service -l | grep -E "dns|libvirt"
dnsmasq
libvirt-guests
libvirtd
❯ sudo rc-status
Runlevel: default
dbus [ started 00:07:06 (0) ]
wpa_supplicant [ started ]
connmand [ started 00:07:04 (0) ]
dnsmasq [ failed ]
libvirtd [ started ]
netmount [ started ]
postgresql [ started ]
local [ started ]
agetty.tty5 [ started 00:07:03 (0) ]
agetty.tty6 [ started 00:07:03 (0) ]
agetty.tty2 [ started 00:07:03 (0) ]
agetty.tty4 [ started 00:07:03 (0) ]
agetty.tty1 [ started 00:07:03 (0) ]
agetty.tty3 [ started 00:07:03 (0) ]
Dynamic Runlevel: hotplugged
Dynamic Runlevel: needed/wanted
virtlogd [ started ]
Dynamic Runlevel: manual
dnsmasq
As you can see in the following snippet, the service goes up but hen some seconds later it goes down.
❯ sudo rc-service dnsmasq start; sudo rc-service dnsmasq status
* Starting dnsmasq ... [ ok ]
* status: started
❯ sudo rc-service dnsmasq status
* status: stopped
Not sure if it's useful but here you have the xml config from the virt-manager virtual network I'm using.
<network>
<name>default</name>
<uuid>211064ca-5bc5-4243-add1-2519dfc3dbcf</uuid>
<forward mode="nat">
<nat>
<port start="1024" end="65535"/>
</nat>
</forward>
<bridge name="virbr0" stp="on" delay="0"/>
<mac address="52:54:00:XX:XX:XX"/>
<ip address="10.100.100.1" netmask="255.255.255.0">
<dhcp>
<range start="10.100.100.1" end="10.100.100.254"/>
</dhcp>
</ip>
</network>
❯ sudo pacman -Qi libvirt
Name : libvirt
Version : 1:10.0.0-3
Description : API for controlling virtualization engines (openvz,kvm,qemu,virtualbox,xen,etc)
Architecture : x86_64
URL : https://libvirt.org/
Licenses : LGPL-2.1-or-later GPL-3.0-or-later
Groups : None
Provides : libvirt=10.0.0 libvirt.so=0-64 libvirt-admin.so=0-64 libvirt-lxc.so=0-64 libvirt-qemu.so=0-64
Depends On : libpciaccess yajl fuse3 gnutls parted libssh libxml2 numactl polkit libnbd libnl
Optional Deps : libvirt-storage-gluster: Gluster storage backend
libvirt-storage-iscsi-direct: iSCSI-direct storage backend
gettext: required for libvirt-guests.service [installed]
openbsd-netcat: for remote management over ssh [installed]
dmidecode: DMI system info support
dnsmasq: required for default NAT/DHCP for guests [installed]
radvd: IPv6 RAD support
iptables-nft: required for default NAT networking [installed]
qemu-desktop: QEMU/KVM support
qemu-emulators-full: Support of additional QEMU architectures
lvm2: Logical Volume Manager support [installed]
open-iscsi: iSCSI support via iscsiadm
swtpm: TPM emulator support
Required By : libvirt-glib libvirt-openrc libvirt-python
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 46.01 MiB
Packager : Artix Build Bot <[email protected]>
Build Date : Wed 14 Feb 2024 07:45:53 AM CET
Install Date : Sat 24 Feb 2024 02:31:39 PM CET
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature
Perhaps it's related but wpa_supplicant disables the SSID that I'm using at the moment trying to debug this. Also I want to mention I'm running too with dhcpcd, would that be causing any issues here?
Thanks in advance for your time and help!
Topic: QEMU/KVM issues with dnsmasq (Read 701 times)
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