Network Link Conditioner has no effect on local nginx

I have Network Link Conditioner installed and working on Yosemite. With the profile '100% loss' enabled, I cannot access any non-local website anymore.

My local nginx is however completely unaffected. No matter whether I bind and access it via

listen       8080;

or

listen       127.0.0.1:8080;

or

listen       192.168.1.2:8080;

it bypasses NLC. How do I get this to work?