Matthias Drochner wrote:

> If it closes after about 2 hours and 12 minutes, then it
> is what I have fixed last week (tcp_subr.c rev. 1.71).
> The code for sending of keepalive messages (the m==0 case
> in tcp_respond) had 2 independant bugs which caused
> keepalive packets to be dropped silently.

The last one I had was 2 hours, 11 minutes and 51 seconds - close enough
for me!  A kernel upgrade is easier than a bug hunt - thanks Matthias.

Simon.