On Thu, 03 Nov 2011 10:24:19 +0100, Jens Mueller wrote: > I found what's causing this behavior (see man 7 socket (search for > SO_RCVBUF)). > The maximum value is specified in /proc/sys/net/core/rmem_max. On my > system it's 131071. > > Jens Yup, I got there too, so I've dropped the idea. Thanks for helping. Steve