After a reboot and ensuring that the guest was not running, I was able to conclude the dpkg operation.
sebboh@truth:~$ sudo apt-get install bugreport E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. sebboh@truth:~$ sudo dpkg --configure -a Setting up systemd (236-1) ... Processing triggers for man-db (2.7.6.1-4) ... Setting up apt-cacher-ng (3.1-1) ... Created symlink /etc/systemd/system/multi-user.target.wants/apt-cacher-ng.service → /lib/systemd/system/apt-cacher-ng.service. Processing triggers for systemd (236-1) ... sebboh@truth:~$ That's all I know for now. bugreport follows. Cheers, --Dave Subject: Re: libvirt-daemon-system (bpo) upgrade hard freezes system Followup-For: Bug #893257 Package: libvirt-daemon-system Version: 4.1.0-2 -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.14.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages libvirt-daemon-system depends on: ii adduser 3.116 ii debconf [debconf-2.0] 1.5.65 ii gettext-base 0.19.8.1-4 ii iptables 1.6.1-2+b1 ii libacl1 2.2.52-3+b1 ii libapparmor1 2.11.1-4 ii libaudit1 1:2.8.2-1 ii libblkid1 2.30.2-0.1 ii libc6 2.26-2 ii libcap-ng0 0.7.7-3.1+b1 ii libdbus-1-3 1.12.2-1 ii libdevmapper1.02.1 2:1.02.145-4.1 ii libgnutls30 3.5.16-1 ii libnl-3-200 3.2.27-2 ii libnl-route-3-200 3.2.27-2 ii libnuma1 2.0.11-2.1 ii libselinux1 2.7-2 ii libvirt-clients 4.1.0-2 ii libvirt-daemon 4.1.0-2 ii libvirt0 4.1.0-2 ii libxml2 2.9.4+dfsg1-5.2 ii libyajl2 2.1.0-2+b3 ii logrotate 3.11.0-0.1 ii lsb-base 9.20170808 ii policykit-1 0.105-18 Versions of packages libvirt-daemon-system recommends: pn bridge-utils <none> ii dmidecode 3.1-1 ii dnsmasq-base 2.78-3 ii ebtables 2.0.10.4-3.5+b1 ii iproute2 4.13.0-1 pn parted <none> Versions of packages libvirt-daemon-system suggests: pn apparmor <none> pn auditd <none> pn nfs-common <none> pn pm-utils <none> pn radvd <none> ii systemd 236-1 pn systemtap <none> pn zfsutils <none> -- Configuration Files: /etc/libvirt/nwfilter/allow-arp.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit allow-arp or other application using the libvirt API. --> <filter name='allow-arp' chain='arp' priority='-500'> <uuid>b7ead4b0-10ac-4fcf-a0ad-7feae6f4618c</uuid> <rule action='accept' direction='inout' priority='500'/> </filter> /etc/libvirt/nwfilter/allow-dhcp-server.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit allow-dhcp-server or other application using the libvirt API. --> <filter name='allow-dhcp-server' chain='ipv4' priority='-700'> <uuid>b2356554-33cc-4cfe-bd23-d86b77cf6912</uuid> <rule action='accept' direction='out' priority='100'> <ip srcipaddr='0.0.0.0' dstipaddr='255.255.255.255' protocol='udp' srcportstart='68' dstportstart='67'/> </rule> <rule action='accept' direction='in' priority='100'> <ip srcipaddr='$DHCPSERVER' protocol='udp' srcportstart='67' dstportstart='68'/> </rule> </filter> /etc/libvirt/nwfilter/allow-dhcp.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit allow-dhcp or other application using the libvirt API. --> <filter name='allow-dhcp' chain='ipv4' priority='-700'> <uuid>34b110c1-e911-4c38-b037-44de8913d59d</uuid> <rule action='accept' direction='out' priority='100'> <ip srcipaddr='0.0.0.0' dstipaddr='255.255.255.255' protocol='udp' srcportstart='68' dstportstart='67'/> </rule> <rule action='accept' direction='in' priority='100'> <ip protocol='udp' srcportstart='67' dstportstart='68'/> </rule> </filter> /etc/libvirt/nwfilter/allow-incoming-ipv4.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit allow-incoming-ipv4 or other application using the libvirt API. --> <filter name='allow-incoming-ipv4' chain='ipv4' priority='-700'> <uuid>2c62a6e4-5f0c-420f-9fa9-15e21aa6b7b2</uuid> <rule action='accept' direction='in' priority='500'/> </filter> /etc/libvirt/nwfilter/allow-ipv4.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit allow-ipv4 or other application using the libvirt API. --> <filter name='allow-ipv4' chain='ipv4' priority='-700'> <uuid>69fc2290-7af6-44f6-ac09-936d8eb1b959</uuid> <rule action='accept' direction='inout' priority='500'/> </filter> /etc/libvirt/nwfilter/clean-traffic.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit clean-traffic or other application using the libvirt API. --> <filter name='clean-traffic' chain='root'> <uuid>b7d6cd03-bfa0-4f93-81af-fb786c428e9c</uuid> <filterref filter='no-mac-spoofing'/> <filterref filter='no-ip-spoofing'/> <rule action='accept' direction='out' priority='-650'> <mac protocolid='ipv4'/> </rule> <filterref filter='allow-incoming-ipv4'/> <filterref filter='no-arp-spoofing'/> <rule action='accept' direction='inout' priority='-500'> <mac protocolid='arp'/> </rule> <filterref filter='no-other-l2-traffic'/> <filterref filter='qemu-announce-self'/> </filter> /etc/libvirt/nwfilter/no-arp-ip-spoofing.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-arp-ip-spoofing or other application using the libvirt API. --> <filter name='no-arp-ip-spoofing' chain='arp-ip' priority='-510'> <uuid>6e8615f0-3637-4229-9c5e-546bb52cebf7</uuid> <rule action='return' direction='out' priority='400'> <arp arpsrcipaddr='$IP'/> </rule> <rule action='drop' direction='out' priority='1000'/> </filter> /etc/libvirt/nwfilter/no-arp-mac-spoofing.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-arp-mac-spoofing or other application using the libvirt API. --> <filter name='no-arp-mac-spoofing' chain='arp-mac' priority='-520'> <uuid>43ebfc31-ca44-4dea-936e-b2f7349d9276</uuid> <rule action='return' direction='out' priority='350'> <arp arpsrcmacaddr='$MAC'/> </rule> <rule action='drop' direction='out' priority='1000'/> </filter> /etc/libvirt/nwfilter/no-arp-spoofing.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-arp-spoofing or other application using the libvirt API. --> <filter name='no-arp-spoofing' chain='root'> <uuid>6bad362c-d5c1-4ea9-b42f-1b4fc9f4ba8c</uuid> <filterref filter='no-arp-mac-spoofing'/> <filterref filter='no-arp-ip-spoofing'/> </filter> /etc/libvirt/nwfilter/no-ip-multicast.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-ip-multicast or other application using the libvirt API. --> <filter name='no-ip-multicast' chain='ipv4' priority='-700'> <uuid>c6b605ec-a9e0-4afa-9e9d-21219ce17e02</uuid> <rule action='drop' direction='out' priority='500'> <ip dstipaddr='224.0.0.0' dstipmask='4'/> </rule> </filter> /etc/libvirt/nwfilter/no-ip-spoofing.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-ip-spoofing or other application using the libvirt API. --> <filter name='no-ip-spoofing' chain='ipv4-ip' priority='-710'> <uuid>5cfe6bd8-ffda-4bf5-85cd-1a7caa41e758</uuid> <rule action='return' direction='out' priority='100'> <ip srcipaddr='0.0.0.0' protocol='udp'/> </rule> <rule action='return' direction='out' priority='500'> <ip srcipaddr='$IP'/> </rule> <rule action='drop' direction='out' priority='1000'/> </filter> /etc/libvirt/nwfilter/no-mac-broadcast.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-mac-broadcast or other application using the libvirt API. --> <filter name='no-mac-broadcast' chain='ipv4' priority='-700'> <uuid>c4bddf82-d6a1-41df-be2d-fc77b39fc3eb</uuid> <rule action='drop' direction='out' priority='500'> <mac dstmacaddr='ff:ff:ff:ff:ff:ff'/> </rule> </filter> /etc/libvirt/nwfilter/no-mac-spoofing.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-mac-spoofing or other application using the libvirt API. --> <filter name='no-mac-spoofing' chain='mac' priority='-800'> <uuid>6e7a4433-951c-4db5-8ab5-f207acc5bf5c</uuid> <rule action='return' direction='out' priority='500'> <mac srcmacaddr='$MAC'/> </rule> <rule action='drop' direction='out' priority='500'> <mac/> </rule> </filter> /etc/libvirt/nwfilter/no-other-l2-traffic.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-other-l2-traffic or other application using the libvirt API. --> <filter name='no-other-l2-traffic' chain='root'> <uuid>c62645b5-ba97-4a0d-adf0-dca57e1692b6</uuid> <rule action='drop' direction='inout' priority='1000'/> </filter> /etc/libvirt/nwfilter/no-other-rarp-traffic.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit no-other-rarp-traffic or other application using the libvirt API. --> <filter name='no-other-rarp-traffic' chain='rarp' priority='-400'> <uuid>1ae86cfb-2ca1-485d-a617-6e3f137ab51e</uuid> <rule action='drop' direction='inout' priority='1000'/> </filter> /etc/libvirt/nwfilter/qemu-announce-self-rarp.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit qemu-announce-self-rarp or other application using the libvirt API. --> <filter name='qemu-announce-self-rarp' chain='rarp' priority='-400'> <uuid>ec48a012-4d37-462a-81c2-19cbdc55aa33</uuid> <rule action='accept' direction='out' priority='500'> <rarp srcmacaddr='$MAC' dstmacaddr='ff:ff:ff:ff:ff:ff' opcode='Request_Reverse' arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC' arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/> </rule> <rule action='accept' direction='in' priority='500'> <rarp dstmacaddr='ff:ff:ff:ff:ff:ff' opcode='Request_Reverse' arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC' arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/> </rule> </filter> /etc/libvirt/nwfilter/qemu-announce-self.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh nwfilter-edit qemu-announce-self or other application using the libvirt API. --> <filter name='qemu-announce-self' chain='root'> <uuid>3526c0fb-4558-4818-9195-ace5ad3fde0d</uuid> <rule action='accept' direction='out' priority='500'> <mac protocolid='0x835'/> </rule> <filterref filter='qemu-announce-self-rarp'/> <filterref filter='no-other-rarp-traffic'/> </filter> /etc/libvirt/qemu/networks/default.xml changed: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh net-edit default or other application using the libvirt API. --> <network> <name>default</name> <uuid>907a9b43-0dbe-40e8-b57d-f2e026d436d1</uuid> <forward mode='nat'/> <bridge name='virbr0' stp='on' delay='0'/> <mac address='52:54:00:d4:53:da'/> <ip address='192.168.122.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.122.2' end='192.168.122.254'/> </dhcp> </ip> </network> -- debconf information: libvirt-daemon-system/id_warning: true