Keep all IP addresses

[ArashB]

Hi there

I'm only having "registration IP" in my admin control panel and the rest of the IP addresses are empty, it seems like my forum does not keep the IP addresses my users have used.

I need to know that in order to discover people who have two nicknames

[ArashB]

any ideas anyone?

[Opserty]

IP address are only stored for registration, postings and admin log actions. What are you referring to exactly when you say "the rest of the IP addresses are empty"?