** Description changed:

- libvirt-daemon-system package runs two seemingly-identical (same
- invocation, same config file) copies of dnsmasq (one of which runs as
- root). Presumably only one copy should be running, owned by 'nobody'.
- 
+ libvirt-daemon-system package runs dnsmasq as 'nobody'.
  
  $ lsb_release -rd
  Description:  Ubuntu Bionic Beaver (development branch)
  Release:      18.04
  
- 
  $ apt-cache policy libvirt-daemon-system
  libvirt-daemon-system:
-   Instal·lat: 3.6.0-1ubuntu6
-   Candidat:   3.6.0-1ubuntu6
-   Taula de versió:
-  *** 3.6.0-1ubuntu6 500
-         500 http://es.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
-         100 /var/lib/dpkg/status
- 
+   Instal·lat: 3.6.0-1ubuntu6
+   Candidat:   3.6.0-1ubuntu6
+   Taula de versió:
+  *** 3.6.0-1ubuntu6 500
+         500 http://es.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
+         100 /var/lib/dpkg/status
  
  $ sudo apt install libvirt-daemon-system
- S'està llegint la llista de paquets… Fet 
- S'està construint l'arbre de dependències       
+ S'està llegint la llista de paquets… Fet
+ S'està construint l'arbre de dependències
  S'està llegint la informació de l'estat… Fet
  S'instal·laran els següents paquets extres:
-   libvirt-daemon
+   libvirt-daemon
  Paquets suggerits:
-   numad radvd auditd systemtap nfs-common zfsutils pm-utils
+   numad radvd auditd systemtap nfs-common zfsutils pm-utils
  S'instal·laran els paquets NOUS següents:
-   libvirt-daemon libvirt-daemon-system
+   libvirt-daemon libvirt-daemon-system
  0 actualitzats, 2 nous a instal·lar, 0 a suprimir i 0 no actualitzats.
  S'ha d'obtenir 0 B/2227 kB d'arxius.
  Després d'aquesta operació s'empraran 10,3 MB d'espai en disc addicional.
- Voleu continuar? [S/n] 
+ Voleu continuar? [S/n]
  S'estan preconfigurant els paquets...
  S'està seleccionant el paquet libvirt-daemon prèviament no seleccionat.
  (S'està llegint la base de dades… hi ha 150336 fitxers i directoris 
instal·lats actualment.)
  S'està preparant per a desempaquetar 
…/libvirt-daemon_3.6.0-1ubuntu6_amd64.deb…
  S'està desempaquetant libvirt-daemon (3.6.0-1ubuntu6)…
  S'està seleccionant el paquet libvirt-daemon-system prèviament no seleccionat.
  S'està preparant per a desempaquetar 
…/libvirt-daemon-system_3.6.0-1ubuntu6_amd64.deb…
  S'està desempaquetant libvirt-daemon-system (3.6.0-1ubuntu6)…
  S'estan processant els activadors per a ureadahead (0.100.0-20)…
  ureadahead will be reprofiled on next reboot
  S'està configurant libvirt-daemon (3.6.0-1ubuntu6)…
  S'estan processant els activadors per a systemd (235-3ubuntu3)…
  S'estan processant els activadors per a man-db (2.7.6.1-4)…
  S'està configurant libvirt-daemon-system (3.6.0-1ubuntu6)…
  S'està afegint l'usuari libvirt-qemu al grup libvirt-qemu
  Created symlink 
/etc/systemd/system/multi-user.target.wants/libvirt-guests.service → 
/lib/systemd/system/libvirt-guests.service.
  Created symlink /etc/systemd/system/libvirt-bin.service → 
/lib/systemd/system/libvirtd.service.
  Created symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service 
→ /lib/systemd/system/libvirtd.service.
  Created symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket → 
/lib/systemd/system/virtlockd.socket.
  Created symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket → 
/lib/systemd/system/virtlogd.socket.
  virtlockd.service is a disabled or a static unit, not starting it.
  Setting up libvirt-daemon dnsmasq configuration.
  S'estan processant els activadors per a ureadahead (0.100.0-20)…
  S'estan processant els activadors per a systemd (235-3ubuntu3)…
  
- 
  $ service libvirtd status
  ● libvirtd.service - Virtualization daemon
-    Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor 
preset:
-    Active: active (running) since Tue 2018-01-16 18:16:08 CET; 7s ago
-      Docs: man:libvirtd(8)
-            http://libvirt.org
-  Main PID: 3476 (libvirtd)
-     Tasks: 18 (limit: 32768)
-    CGroup: /system.slice/libvirtd.service
-            ├─3476 /usr/sbin/libvirtd
-            ├─3771 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default
-            └─3772 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default
+    Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor 
preset:
+    Active: active (running) since Tue 2018-01-16 18:16:08 CET; 7s ago
+      Docs: man:libvirtd(8)
+            http://libvirt.org
+  Main PID: 3476 (libvirtd)
+     Tasks: 18 (limit: 32768)
+    CGroup: /system.slice/libvirtd.service
+            ├─3476 /usr/sbin/libvirtd
+            ├─3771 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default
+            └─3772 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default
  
  gen 16 18:16:08 desktop systemd[1]: Started Virtualization daemon.
  gen 16 18:16:09 desktop dnsmasq[3771]: started, version 2.78 cachesize 150
  gen 16 18:16:09 desktop dnsmasq[3771]: compile time options: IPv6 GNU-getopt 
DBu
  gen 16 18:16:09 desktop dnsmasq-dhcp[3771]: DHCP, IP range 192.168.122.2 -- 
192.
  gen 16 18:16:09 desktop dnsmasq-dhcp[3771]: DHCP, sockets bound exclusively 
to i
  gen 16 18:16:09 desktop dnsmasq[3771]: reading /etc/resolv.conf
  gen 16 18:16:09 desktop dnsmasq[3771]: using nameserver 127.0.0.53#53
  gen 16 18:16:09 desktop dnsmasq[3771]: read /etc/hosts - 7 addresses
  gen 16 18:16:09 desktop dnsmasq[3771]: read 
/var/lib/libvirt/dnsmasq/default.add
  gen 16 18:16:09 desktop dnsmasq-dhcp[3771]: read 
/var/lib/libvirt/dnsmasq/defaul
- 
  
  $ sudo ps aux | grep dnsmasq | grep -v grep
  nobody    3771  0.0  0.0  54552   388 ?        S    18:16   0:00 
/usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf 
--leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
  root      3772  0.0  0.0  54524   388 ?        S    18:16   0:00 
/usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf 
--leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libvirt-daemon-system 3.6.0-1ubuntu6
  ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
  Uname: Linux 4.13.0-25-generic x86_64
  ApportVersion: 2.20.8-0ubuntu6
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Jan 16 18:18:29 2018
  InstallationDate: Installed on 2018-01-16 (0 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180115)
  SourcePackage: libvirt
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.libvirt.nwfilter.allow-arp.xml: [inaccessible: [Errno 
13] S’ha denegat el permís: '/etc/libvirt/nwfilter/allow-arp.xml']
  modified.conffile..etc.libvirt.nwfilter.allow-dhcp-server.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/allow-dhcp-server.xml']
  modified.conffile..etc.libvirt.nwfilter.allow-dhcp.xml: [inaccessible: [Errno 
13] S’ha denegat el permís: '/etc/libvirt/nwfilter/allow-dhcp.xml']
  modified.conffile..etc.libvirt.nwfilter.allow-incoming-ipv4.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/allow-incoming-ipv4.xml']
  modified.conffile..etc.libvirt.nwfilter.allow-ipv4.xml: [inaccessible: [Errno 
13] S’ha denegat el permís: '/etc/libvirt/nwfilter/allow-ipv4.xml']
  modified.conffile..etc.libvirt.nwfilter.clean-traffic.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/clean-traffic.xml']
  modified.conffile..etc.libvirt.nwfilter.no-arp-ip-spoofing.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/no-arp-ip-spoofing.xml']
  modified.conffile..etc.libvirt.nwfilter.no-arp-mac-spoofing.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/no-arp-mac-spoofing.xml']
  modified.conffile..etc.libvirt.nwfilter.no-arp-spoofing.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/no-arp-spoofing.xml']
  modified.conffile..etc.libvirt.nwfilter.no-ip-multicast.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/no-ip-multicast.xml']
  modified.conffile..etc.libvirt.nwfilter.no-ip-spoofing.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/no-ip-spoofing.xml']
  modified.conffile..etc.libvirt.nwfilter.no-mac-broadcast.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/no-mac-broadcast.xml']
  modified.conffile..etc.libvirt.nwfilter.no-mac-spoofing.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/nwfilter/no-mac-spoofing.xml']
  modified.conffile..etc.libvirt.nwfilter.no-other-l2-traffic.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/no-other-l2-traffic.xml']
  modified.conffile..etc.libvirt.nwfilter.no-other-rarp-traffic.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/no-other-rarp-traffic.xml']
  modified.conffile..etc.libvirt.nwfilter.qemu-announce-self-rarp.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/qemu-announce-self-rarp.xml']
  modified.conffile..etc.libvirt.nwfilter.qemu-announce-self.xml: 
[inaccessible: [Errno 13] S’ha denegat el permís: 
'/etc/libvirt/nwfilter/qemu-announce-self.xml']
  modified.conffile..etc.libvirt.qemu.conf: [inaccessible: [Errno 13] S’ha 
denegat el permís: '/etc/libvirt/qemu.conf']
  modified.conffile..etc.libvirt.qemu.networks.default.xml: [inaccessible: 
[Errno 13] S’ha denegat el permís: '/etc/libvirt/qemu/networks/default.xml']

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https://bugs.launchpad.net/bugs/1743718

Title:
  libvirt-daemon-system package runs dnsmasq as nobody

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