Thank you. I guess what got me was the documentation saying "Make sure that NIS
domain name matches your domain." Seeing as how the client set the nisdomainname to
be my hosts (sub)domain, it seemed correct.
https://www.freeipa.org/page/Troubleshooting/Integration
Combining what you said with the link you provided, makes it very clear what was wrong for
me.
- There is a common NIS domain for the whole IPA
- the IPA domain is used as the default to set the NIS domain.