ipa-client.x86_64                     4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-client-common.noarch              4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-common.noarch                     4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-healthcheck.noarch                0.7-6.module+el8.5.0+11410+91a33fe4              @rhel-8-for-x86_64-appstream-rpms

ipa-healthcheck-core.noarch           0.7-6.module+el8.5.0+11410+91a33fe4              @rhel-8-for-x86_64-appstream-rpms

ipa-selinux.noarch                    4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-server.x86_64                     4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-server-common.noarch              4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

ipa-server-trust-ad.x86_64            4.9.6-6.module+el8.5.0+12660+88e16a2c            @rhel-8-for-x86_64-appstream-rpms

Server is running RHEL 8.5

I follow all the Red Hat instructions to set up for an AD trust.

When I get to the final step,

ipa trust-add --type=ad ad_domain_name --admin ad_admin_username –password

I get

CIFS server communication error: code "3221225997", message "The transport connection has been reset." (both may be "None")

Red Hat tech support is clueless (so what else is new)

Any clues from the IPA folks ?