In article [ref] (at Sat, 24 Jan 2004 14:13:07 +0100), Erik Hensema [off-list ref] says:

I wrote some quick&dirty code showing the tcp6_sock leak in Linux 2.6.x.
The server part listens for incoming connections and accept()'s them. The
client will simply connect() to the server and close the connection.

Okay, I confirm that there're something wrong with tcp6 socket.
I'll look into it as soon as possible.

--yoshfuji