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I see that TLS 1.1 isn´t supported, then old devices has problem with PNP, however in this document which explains how to activate TLS 1.1: https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/ha...
Has a Bug ID been created? OpenAPI with certificate works fine to import the CA´s and certificate if you example use Buypass ACME, its Let´s Encrypt intermediate CA´s that you cannot import to trusted certificate through OpenAPI (add all 4 manually a...