Mountain Lion printer not found on bonjour, can't install by IP My networked HP6310 suddenly stopped working today from my MBPro running Mountain Lion. Other laptops in the house (MB running Snow Leopard, MBP running Lion) can still print. I can connect via USB and print, so I don't believe it's the driver. I deleted the networked printer, intending to reinstall, but found that the printer is not found by Bonjour. I can access the printer on the web using the IP address, but not by using the address HP4xxxxx.local. I tried adding the printer by IP, but got this:



Suggestions on how to resolve?
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.