Public bug reported: In 16.10, FF 49.0, it seems that Firefox want to use the systemd resolved service via dbus:
audit: type=1107 audit(1476778477.837:122): pid=3449 uid=105 auid=4294967295 ses=4294967295 msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/resolve1" interface="org.freedesktop.resolve1.Manager" member="ResolveHostname" mask="send" name="org.freedesktop.resolve1" pid=9652 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=3909 peer_label="unconfined" ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: apparmor 2.10.95-4ubuntu5.1 ProcVersionSignature: Ubuntu 4.8.0-25.27-generic 4.8.1 Uname: Linux 4.8.0-25-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Tue Oct 18 10:55:46 2016 InstallationDate: Installed on 2015-10-04 (379 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151002) ProcKernelCmdline: BOOT_IMAGE=/vmlinuz-4.8.0-25-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro noprompt persistent kaslr threadirqs quiet splash vt.handoff=7 SourcePackage: apparmor Syslog: Oct 18 09:01:30 franck-ThinkPad-T430s dbus[5726]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gnome/GConf/Server" interface="org.gnome.GConf.Server" member="Bye" name=":1.128" mask="receive" pid=8287 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=7443 peer_label="unconfined" Oct 18 09:02:58 franck-ThinkPad-T430s dbus[3449]: [system] AppArmor D-Bus mediation is enabled Oct 18 10:50:57 franck-ThinkPad-T430s dbus[3455]: [system] AppArmor D-Bus mediation is enabled UpgradeStatus: Upgraded to yakkety on 2016-10-14 (3 days ago) ** Affects: apparmor (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug package-from-proposed yakkety -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1634416 Title: Firefox need access to org.freedesktop.resolve1 ResolvehostName To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1634416/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs