Cloudflare posted a post-mortem [1]. They were measuring round trip time, and supplying the result of that into the golang rand.Int63n() function, which panics

Cloudflare posted a post-mortem [1]. They were measuring round trip time, and supplying the result of that into the golang rand.Int63n() function, which panics the process when given a negative number. [1] https://blog.cloudflare.com/how-and-why-the-leap-second-affected-cloudflare-dns/ https://blog.cloudflare.com/how-and-why-the-leap-second-affe...