Well, I saw mentions of ACMEv2 as early as in 0.22.0, but probably it wasn't production-ready. And judging from the linked topic, indeed the recommended version is 1.6.0, but the corresponding changes were backported to e.g. Debian 9 (0.28.0).
Well, I saw mentions of ACMEv2 as early as in 0.22.0, but probably it wasn't production-ready. And judging from the linked topic, indeed the recommended version is 1.6.0, but the corresponding changes were backported to e.g. Debian 9 (0.28.0).