perUserNameResolution failing?

Hi, I need to use perUserNameResolution for testing ELB scaling (http://gatling.io/docs/2.2/whats_new/2.2/#hostname-resolution) but anytime I set the property, all requests fail with the error:

j.n.UnknownHostException: failed to resolve 'example.com'. Exceeded max queries per resolve 6

I’ve peeled the protocol and scenario setup back to the bare minimum, but still get the error. I’ve tried running gatling on OSX and Linux with the same results - both running Java 8. My basic protocol setup:

`
val httpProtocol = http
.baseURL(“https://example.com”)
.perUserNameResolution

`

Any suggestions?

Cheers
Andrew

Raised bug: https://github.com/gatling/gatling/issues/3318