Yes, that worked - Happily added the "Reason" header here. So this is a work-around that we may have to document until we have a solution.
```
GET http://localhost:5060/api/1.0/ping HTTP/1.1 Host: localhost:5060 User-Agent: curl/7.52.1 Accept: */*
< HTTP/1.1 200 Ping pong < Sia: SIP/2.0/TCP 127.0.0.1:57458 < Reason: Answering ping API request /api/1.0/ping < Content-Type: text/html < Content-Length: 0 < Date: Tue, 12 Jun 2018 12:38:41 GMT < Age: 0
```