SO_REUSEADDR doesn't work this way

[constfun]

However, a quick check of stackoverflow.com and some memory of a socket option called SO_REUSEADDR turns up gold. If I use that, I can bind several processes to the same UDP port, and they will all receive any message arriving on that port.
http://zguide.zeromq.org/page:all#Multiple-Nodes-on-One-Device

I don't think this is how SO_REUSEADDR works. It will not allows you to run multiple nodes on the same machine while binding to the broadcast address. You will get the same EADDRINUSE error.