Ok, well, I read it. Huh.
Forget what I said before, everyone makes mistakes. But you can flame me more, I deserve it.
So my suggestion now is to find some other way to identify all the clients without having to PING so many damned times.
I'm trying to think of a way to do that without having a list on every client, because that would destroy anonymity.
I still don't think the TTL is really the problem though, because if each client only pings a few other clients, then the packets that fly around loose are still separated on many different subnets.
Anyway, my bad, should read more first.