[zeromq-dev] How to implement fan in?

[snacktime]

I can't find anyone documenting how to do a fan in.

Specific scenario.    I have a multithreaded app.  Most of the threads
handle requests, a few threads are dedicated for things like logging.
So I want all my worker threads to send their log messages to the
single logging thread.  What I really want is a fan in using push
pull, only with one puller that binds and all the pushers connect.
Every example I see makes push bind and pull connect.  Is there any
reason why it cant' be the opposite?

Chris