Hmm, interesting. I don’t think it is serving for site-east.domain.com. Specifying the IP in the rewrite rules yields the same redirection error.
Regarding your setup steps… I’m certainly hung up at the 2nd bullet point. I am not able to load remote_site from master.
I had been familiar with using ProxyPass in other applications, but was trying to be as close to the documentation.
Thanks for validating that I’m not doing something obviously incorrect. I’ll keep exploring…