Is it possible (an how) to detect does client sharing conection?

So, clients connection via pppoe and is possible to share connection. How to stop this?

I have some information that it is possible with setting TTL to 1, but I need details.

Why you need to know that? if you set a fixed number of bandwith per client in profiles, you don't need to worry if they share the connection. Alone they could make it by means of a pppoe router (as adsl router without modem) or sharing with two nics in windows xp.

Number of connections.... Avg computer maybe will use 20 connections at MOST!

sorry, it`s seems questionable about 20 connections from single IP...
maybe.... connections behind ConnectionShare must have different TLL ? (if advanced user use NO mangle and make no changes with TLL)

this topic is very interesting.... new ideas wanted (and examples too)....

Yes, the trick is TTL. Search the forum, the reply was already posted.

but...how to detect these different tll ((((
wat i must to do?
in WinBox or in other soft.....