[TheSupportForum]

the only reason why no ip would show in the post you want to ban the user from is very simple

there are many people who use a proxy to access the internet to hide there ip address
vbulletin does not pick up ip address behind some proxy ip address or private ip addresses

for example
i work for a companie that use
equinoxsolutions as there service provider, however to access there internet serivce you are required to input an proxy address in your broswer settings

so if your not seing an ip address related to a post, then this is the reason

if its a different issue please feel free to ask