nginx routing based on ip address

[keeyong]

I am wondering if it is possible to compute some kind of hash value from ip
address or do modulo operation on the last numeric value from ip address
(for example on 24 given 172.16.4.24)? Based on this, I want to send the
request to different endpoints (not to different servers). If this can be
done without installing any new module, that would be the best.

As far as I can see, I feel like I should do something similar using the
regex?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,264742,264742#msg-264742