I've installed ping on the my N810 running the latest diablo. I've a wireless access point with my Ubuntu desktop cabled and other devices connected WiFi. The tablet can ping the desktop IP although there are frequently some lost packets which don't occur when let's say my laptop pings the desktop. When I ping from my desktop the tablet won't answer. Note that is I ping my laptop it always answers. I've also installed VNC viewer on the tablet and it won't connect to the desktop running the vino server either. I'm either missing something or perhaps configured incorrectly. My N810 is no application virgin. Has anyone seen this problem or is able to make some much appreciated suggestions for troubleshooting?