Weird Issue with Nginx and vbulletin

[محروم.كوم]

i got installed Nginx on my server to improve performance but weird thing happened all new members from the time i got Nginx installed got same registration / login ip as server main ip and every one got kicked off saying number of login retries "15times" has exceeded even i as admin was unable to login , i used search and found a way to use php my admin to clear STRIKES and was able to login admin and disable strike system , it was really bad day though , i got Nginx uninstalled but the question raised by server admin was :-

Does Vbulletin blindly use REMOTE_ADDRESS variable to use it as remote IP without looking at extra variables like X_REAL_IP. ??


we have got mod_rpaf already so it seems not issue at server side , any suggestion ? __DEFINE_LIKE_SHARE__