MHD as an API to XCA

I expected this configuration was well enough explained within the MHD profile with the one paragraph and one diagram in the informative section 33.6.2-1.I find that I need to explain this a bit more than I expected, and have a follow on article that needs this baseline.Often I have to address the fact that XCA is a federation protocol that is addressing many communities. Federation is an important architectural capability allowing many communities to each act on-their-own, while cooperating in a...