FIN_WAIT_2 timeout

[Pavel Gulchouck]

On Tue, Aug 24, 2004 at 12:29:42PM +0100, Richard Wendland writes:
> >> http://httpd.apache.org/docs/misc/fin_wait_2.html says that FreeBSD
> >> has a timeout for FIN_WAIT_2 state, but I don't see it.
>> 
>> Very strange...

RW> This is somewhat similar to a problem I explained a few months back:

RW> 	http://www.mail-archive.com/freebsd-net@freebsd.org/msg11857.html

RW> where a 10 minute keepalive from a Novell system defeated the FreeBSD
RW> 11min 15 sec FIN_WAIT timeout.  This situation is a bit different as
RW> FreeBSD is the server rather than the client.  I wonder if 195.248.160.78
RW> is a Novell system?

RW> If it is similar, there's no real bug in the FreeBSD TCP stack, but the
RW> far end is acting strangely with an abnormally fast keepalive.

RW> It would be worth tcpdumping 195.248.160.78 traffic on those ports for
RW> 30 mins or so to see if it is simply doing keepalives more frequently
RW> that 12 mins.

tcpdumping for 30 min shows now traffic from 195.248.160.78,
only traffic to this host.

-- 
                                Lucky carrier,
                                                  Pavel.