Got this bug today's boot:

# cat /var/log/syslog | grep "Oct 23" | grep -i "network\|dnsmasq\|whoopsie"
Oct 23 13:39:36 localhost systemd[1]: Reached target Network (Pre).
Oct 23 13:39:36 localhost systemd[1]: Starting Raise network interfaces...
Oct 23 13:39:36 localhost systemd[1]: Started Raise network interfaces.
Oct 23 13:39:36 localhost systemd[1]: Reached target Network.
Oct 23 13:39:36 localhost systemd[1]: Reached target Network is Online.
Oct 23 13:39:36 localhost kernel: [    2.547112] FUJITSU Extended Socket Network Device Driver - version 1.0 - Copyright (c) 2015 FUJITSU LIMITED
Oct 23 13:39:36 localhost avahi-daemon[1174]: Network interface enumeration completed.
Oct 23 13:39:36 localhost systemd[1]: Starting Anonymizing overlay network for TCP...
Oct 23 13:39:36 localhost systemd[1]: Starting Anonymizing overlay network for TCP (multi-instance-master)...
Oct 23 13:39:36 localhost systemd[1]: Started Anonymizing overlay network for TCP (multi-instance-master).
Oct 23 13:39:36 localhost whoopsie[1204]: [13:39:36] Using lock path: /var/lock/whoopsie/lock
Oct 23 13:39:36 localhost whoopsie[1204]: [13:39:36] Could not get the Network Manager state:
Oct 23 13:39:36 localhost whoopsie[1204]: [13:39:36] GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.NetworkManager was not provided by any .service files
Oct 23 13:39:37 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:37 localhost systemd[1]: Stopped Anonymizing overlay network for TCP.
Oct 23 13:39:37 localhost systemd[1]: Starting Anonymizing overlay network for TCP...
Oct 23 13:39:39 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:39 localhost systemd[1]: Stopped Anonymizing overlay network for TCP.
Oct 23 13:39:39 localhost systemd[1]: Starting Anonymizing overlay network for TCP...
Oct 23 13:39:40 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:40 localhost systemd[1]: Stopped Anonymizing overlay network for TCP.
Oct 23 13:39:40 localhost systemd[1]: Starting Anonymizing overlay network for TCP...
Oct 23 13:39:41 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:41 localhost systemd[1]: Stopped Anonymizing overlay network for TCP.
Oct 23 13:39:41 localhost systemd[1]: Starting Anonymizing overlay network for TCP...
Oct 23 13:39:42 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:42 localhost systemd[1]: Stopped Anonymizing overlay network for TCP.
Oct 23 13:39:42 localhost systemd[1]: Failed to start Anonymizing overlay network for TCP.
Oct 23 13:39:48 localhost dnsmasq[2228]: started, version 2.75 cachesize 150
Oct 23 13:39:48 localhost dnsmasq[2228]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify
Oct 23 13:39:48 localhost dnsmasq-dhcp[2228]: DHCP, IP range 192.168.122.2 -- 192.168.122.254, lease time 1h
Oct 23 13:39:48 localhost dnsmasq-dhcp[2228]: DHCP, sockets bound exclusively to interface virbr0
Oct 23 13:39:48 localhost dnsmasq[2228]: no servers found in /etc/resolv.conf, will retry
Oct 23 13:39:48 localhost dnsmasq[2228]: read /etc/hosts - 7 addresses
Oct 23 13:39:48 localhost dnsmasq[2228]: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses
Oct 23 13:39:48 localhost dnsmasq-dhcp[2228]: read /var/lib/libvirt/dnsmasq/default.hostsfile
Oct 23 13:39:58 localhost blueman-mechanism: loading Network


I have already disabled `dnsmasq` in /etc/NetworkManager/NetworkManager.conf:

[main]
plugins=ifupdown,keyfile,ofono
#dns=dnsmasq

[ifupdown]
managed=false


NetworkManager is a great tool for Wi-Fi and Ethernet configuration, I'm using laptop, not server.

This bug is CRITICAL. Please fix it.