My DNS Server keeps changing to 10.0.22.1 & 10.0.22.2 in OSX 10.9.5. This causes me to regularly lose internet access until I go into the network preferences pane and delete the two "incorrect" DNS address which cause the correct addresses to automatically re-appear. Then after re-starting my browser, all is well again. If I check my network settings again, the incorrect DNS address have almost always re-appeared by themselves but loss of internet hasn't necessarily occurred. I've checked the DNS settings in my Apple Airport and they are correct and haven't changed and I've also cleared all caches but that doesn't seem to make a difference.