Oh noes ;) I am coming closer to this bug with the help of my other dbus related bugs. https://bugzilla.opensuse.org/show_bug.cgi?id=929564 I have finally figured out that the nat capability of my Leap 42.1 dies immediately when I systemctl restart dbus.service Fellow lan machines can not ping or tcp connect or anything any more (simple susefirewall2 config via yast or default means) when one is issuing the dbus.service restart. Unless one then systemctl restart SuSEfirewall2.service again thereafter to fix it again. This is a huge pain. Why is dbus affecting the firewall or is it even iptables or what exactly? iptables -L looks just normal and rules do exist Is it maybe again some other networking (or wicked or something?) component where dbus ties in and blocks down? The suse linux box itself can be normally pinged and accessed (via ssh for example) from either side (lan or wan) Only the routing/nat seems to be affected. My other dbus related bugreport was about dbus causing huge cpu load on xserver or xorg or so. Please read my findings at #boo929564 https://bugzilla.opensuse.org/show_bug.cgi?id=929564#c5 onwards (or the whole bugreport) and xorg dbus bug at #boo954433 https://bugzilla.opensuse.org/show_bug.cgi?id=954433 Thanks in advance for sorting out these damn dbus related bugs