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Document URL: 
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/windows_integration_guide/trust-during#trust-issues
Section Number and Name: 
5.2.3.1. Potential Behavior Issues with Active Directory Trust

Describe the issue: 
Among the various issues/limitation when a trust is established with AD, there's no wording about the fact that sudo for ad users will not work on rhel6, if default_domain_suffix is set.

the issue is tracked down in this solution, but since has been decided that a fix will not be implemented, is important to state it clearly in the official documentation:
https://access.redhat.com/solutions/2154701

Suggestions for improvement: 
Include the content of the article into a sub-chapter in this section

Additional information: 
A later discovery of that limitation can cause a lot of problems on customers, who will not be able to have a consistent experience in heterogeneous envs with rhel6/7 .

Thanks for the report, Andrea.

From your comment and the solution you linked to, it seems this should be filed against the RHEL 6 book, so I'm changing the product version and the component.

Link to the Release Note:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html-single/6.10_release_notes/#known_issues_authentication_and_interoperability