Having Trouble Pinging Multiple Nodes

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http://forums.fedoraforum.org – Hi, I'm having a hard time being able to ping or communicate between my Linux devices. For instance; I have Fedora on my desktop and Ubuntu on a laptop. Both are getting IP addresses from the wireless router (10.0.0.x). I cannot ping using the host.domain schema of each computer. DesktopHost: galvatron.deceptacons IP Address: LaptopHost: rc.deceptacons IP Address: I can ping using the ip address, but I can't communicate using their host names. Which also means I cannot transfer files between each node. I'll use Nautilus and go to the "networking" view, but ()