Saltstack is moving away from ZeroMQ. <a href="https:&#x2F;&#x2F;docs.saltstack.com&#x2F;en&#x2F;latest&#x2F;topics&#x2F;releases&#x2F;2015.8.0.html#tornado-tcp-transport" rel="nofollow">https:&#x2F;&#x2F;docs.saltstack.com&#x2F;en&#x2F;latest&#x2F;topics&#x2F;releases&#x2F;2015.8....</a>