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Date:      Thu, 2 Mar 2000 11:02:55 -0600 (CST)
From:      Kevin Day <toasty@dragondata.com>
To:        shin@nd.net.fujitsu.co.jp (Yoshinobu Inoue)
Cc:        toasty@dragondata.com, current@FreeBSD.ORG
Subject:   Re: lo0 tcp connections in TIME_WAIT/LAST_ACK/FIN_WAIT?
Message-ID:  <200003021703.LAA59035@celery.dragondata.com>
In-Reply-To: <20000302113536C.shin@nd.net.fujitsu.co.jp> from "Yoshinobu Inoue" at Mar 02, 2000 11:35:36 AM

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> 
> > After upgrading from 3.4 to RC2, i'm noticing something that I never saw
> > before:
> > 
> > Active Internet connections (including servers)
> > Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
> > tcp        0      0  127.0.0.1.4954         127.0.0.1.4242         SYN_SENT
> > tcp        0      0  127.0.0.1.4953         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4952         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4951         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4950         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4949         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4948         127.0.0.1.4242         LAST_ACK
> > tcp        0      0  127.0.0.1.4947         127.0.0.1.4242         CLOSE_WAIT
> > tcp        0      0  127.0.0.1.4945         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4944         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4942         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4940         127.0.0.1.4242         FIN_WAIT_1
> > tcp        0      0  127.0.0.1.4938         127.0.0.1.4242         FIN_WAIT_1
> > tcp        0      0  127.0.0.1.4937         127.0.0.1.4242         TIME_WAIT
> > tcp        0      0  127.0.0.1.4936         127.0.0.1.4242         TIME_WAIT
> > 
> > 
> > Are tcp connections going through lo0 ever supposed to end up like this? I
> > thought everything that went through lo0 was supposed to be.. well..
> > instant and mostly lossless.  Any ideas?
> > 
> > Kevin
> 
> Hi,
> does that happen for any apps?
> Could you please give me info about what is the apps which use
> the port 4242?
> 
> Thanks,
> Yoshinobu Inoue
> 

Right now, it only seems to be happening for bbd (part of
/usr/ports/net/bb), when local connections are talking to bbd. (I moved bbd
to port 4242, it's default is port 1984)

Doing an ifconfig lo0 down ; ifconfig lo0 up seems to have cleared them,
too.

Kevin


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