Jakub Suchy wrote:

Hi, 
i would like to propose a patch to 6-x which will add an option to store
IP address of comment author to the comment. I am looking for this
feature quite some time now and i think that due to spam, IP address is
very valuable resource when fighting it.

  
You should watch out, because in most cases, the IP address is a dynamic thing, not static. When you ban an IP address, you ban my computer today, but it might be my neighbor's IP  tomorrow...
The only option how to accomplish this now is finding that IP in
watchdog log, but it is deleted every X days...
  
You can always develop an contributed module for that.


Zohar