Mountain Lion printer not found on bonjour, can't install by IP
I have a solution, although I'm unable to say why it works, or if I've lost something else in the process. A search on Bonjour/Actiontec/wireless yielded (http://yabfog.com/blog/2012/09/14/making-fios-actiontec-router-and-apple-bonjour-services-play-together) with the suggestion to disable IGMP proxy on the Actiontec router. No issues since I made the change.