When I use java7 (1.7.0_67) and I switch off wifi (or when I'm not connected to any wifi network) I'm not able to run build with the daemon on my mac (Mac OS X 10.9.5 x86_64). This problem also impacts android developers as reported on the mailing list. It might be related to the fact that I'm using a corporate laptop which has some non-standard network/vpn settings. I don't see this problem with java6 or java8. In the code, the InetAddress.getLocalHost() throws an exception.

Starting the build yields:

~/gradle/tryouts/simple> gradle tasks

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the a usable local IP for this machine.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Steps to reproduce: turn off wifi, use java7 on mac, try running a build with the daemon.

When I was traveling and did not have wifi last weekend I used java8 to work around the issue. Full stack trace: https://gist.github.com/szczepiq/e0c455d8a60f71381c83

I've hacked the code to ignore the exception coming from InetAddress.getLocalHost() and this made the build happy.