@mikrotik I now see that on the page there is a link on the bottom - but that doesn't do anything without proprietary JavaScript.

Now that I inspect the HTML I have found this page; https://mikrotik.com/downloadterms.html

The EULA on that page contains terms that infringe the GPLv2.

The offer on that page is not a valid written offer, as corresponding sources that build the .npk are not offered; https://softwarefreedom.org/resources/2008/compliance-guide.html