Limiting upload for a subnet

[Dayo Adewunmi <contactdayo@xxxxxxxxx>]

Hi

I'm want to limit the upload rate of the users of one subnet. I was 
looking through
the config file and found 'request_body_max_size', but that seems to 
apply all
users? Is there a way to make an ACL that would limit the upload of just 
a subset
of my network?
Thanks

Best regards

Dayo Adewunmi