I am seeing this problem consistently with my macbook pro retina 13-inch with Mavericks 10.9.1. Every once in a while, it stops being able to talk to the internet. I have been running a pair of pings, one to the router at 10.0.0.1, and another to google DNS server at 220.127.116.11. The router ping continues along with no problems, while the google ping hangs up for minutes (MINUTES!) at a time. This is frustrating as it seems to happen exactly at the point I want to use the internet.
I'm seeing nothing the console, and other computers I'm running here at home do not experience the problem at all, including another mbp running Snow Leopard.
I've heard about SMB2 problems, but this isn't anything to do with SMB2, just not being able to access the internet.
Also, this problem occurs whether connected via WiFi or hardline ethernet.