Turns out linino needs one more config setting to have the hostname be part of the dhcp request. Edit /etc/config/network and add the following under the "config interface 'lan'" section:
option hostname "arduino"You can change the hostname to whatever you want, but make it match the name you have given your Yun in the "Yun Board Configuration" page (default is "arduino").
Reboot your Yun and it should now show up with a nice name in the list of dchp clients on your router.
Sorry for being such a noob but how do I get to /etc/config/network? If I log in as root using the CLI to get to the linino I don't see any directories.