I was under the impression the `SO_REUSEPORT` implementation on Linux was rather broken, as evidenced by HAProxy's graceful reload still dropping packets[1]. I'm curious as to why Nginx has implemented this when you can design your Nginx config around the problem while not encountering the broken implementation.
[1] http://engineeringblog.yelp.com/2015/04/true-zero-downtime-h...