It appeared recently that libmicrohhtpd isn't able to manage listening interfaces and at the same time to manage in/out streams using epoll. After discussion with maintainers of libmicrohttpd this is a bug and is already corrected. See:

https://gnunet.org/git/libmicrohttpd.git/commit/?id=3fc686e335437ec5f6d6270c8d713e9a01da966f

While waiting for integration of this patched version in poky/openembedded, it is needed to have that patch integrated in AGL for running binders aware of listening interfaces.