I have an Ubuntu 15.10 that's up to date, and I'm still seeing the "rejected" message.
The seemingly most relevant file is /etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf, from the network-manager config file. None of the rules in that file seem to handle all the "(unset)" fields. ** Also affects: network-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1488056 Title: Rejected send message, 10 matched rules; type="method_return", sender=":1.84" Status in bind9 package in Ubuntu: Expired Status in network-manager package in Ubuntu: New Bug description: Seeing lots of those log entries. Here an example Aug 24 20:14:36 M1 NetworkManager[748]: <error> [1440404076.494991] [dns-manager/nm-dns-dnsmasq.c:398] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name Aug 24 20:14:36 M1 dbus[792]: [system] Rejected send message, 10 matched rules; type="method_return", sender=":1.84" (uid=0 pid=3300 comm="/usr/sbin/dnsmasq --no-resolv --keep-in-foreground") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.7" (uid=0 pid=748 comm="/usr/sbin/NetworkManager --no-daemon ") Attached info might help locating the issue. Thanks for any clues. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: dnsmasq 2.72-3ubuntu0.1 ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4 Uname: Linux 3.19.0-26-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.17.2-0ubuntu1.3 Architecture: amd64 Date: Mon Aug 24 23:08:37 2015 InstallationDate: Installed on 2014-10-31 (297 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) PackageArchitecture: all SourcePackage: dnsmasq UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1488056/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp