I have a 2015 Macbook Pro 13in Retina with 10.11.4. For some reason I keep losing internet connectivity. The wifi bars will still show full strength, but the internet won't work. This only happens on my Mac, no other devices have this issue. I have to either restart my Mac or turn wifi off and back on for the internet to start working again. This happens a lot over the course of just an hour. I have tried some things online such as deleting some files to do with internet configuration, but nothing seems to fix it. Anyone have any ideas?