I have a Netgear JGS516 fast switch which works with all my Windows PC's on my LAN but if i connect my MAC pro to the switch it can not reach the internet. It worked once through this switch but now it does not. I am presently running 10.8.5 with the latest update and have mac connected directly to switch using the ethernet port En0 on the MAC. If I connect the MAC directly to the router/Gateway (Uverse) i am able to see the internet, but only if I bypass the switch. The switch is non-managable so it simply passes through all traffic and Workgroup names of the router. The MAC has the same workgroup as the other pc's on the LAN. Please someone give me some guidance or suggestion. I've tried different ports on the switch and everything I can think of. I was likely running 10.8.3 when all worked normal but what could be in 10.8.5 that would cause such an issue if that is even a possibility. Thanks so much!!