Hello, here is patch [1] for TCP socket buffers automatic sizing. I have ported it from FreeBSD [2], but actually have not tested carefully. Anyone could test and review it, please? [1]. http://www.netbsd.org/~rmind/tcp_buf_autosizing.diff [2]. http://mail-index.netbsd.org/tech-net/2007/02/04/0006.html -- Best regards, Mindaugas www.NetBSD.org