General comment about the new .test files:

It would be great to know in which file each one of the following steps is being covered:

* When -ipv6 is in use:
 * IPv6 requests to CB work
 * IPv4 requests to CB work
 * notifications sent to IPv6 addresses work (e.g. using `::1` in `<reference>`)
 * notifications sent to IPv4 addresses work
* When not using -ipv6:
 * IPv6 request to CB doesn't work
 * notifications sent to IPv6 addresses doesn't work

Could you add this information (in the form of comments just before the `--NAME--` mark) in each one of the .test files?