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Date:      Thu, 9 Feb 2012 11:20:47 -0600
From:      "Conrad J. Sabatier" <conrads@cox.net>
To:        Matthew Seaman <m.seaman@infracaninophile.co.uk>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: lost network connections
Message-ID:  <20120209112047.2fd4b4bb@cox.net>
In-Reply-To: <4F33DD16.5000201@infracaninophile.co.uk>
References:  <443241977.20120209173104@thebat.net> <4F33DD16.5000201@infracaninophile.co.uk>

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On Thu, 09 Feb 2012 14:49:58 +0000
Matthew Seaman <m.seaman@infracaninophile.co.uk> wrote:

> On 09/02/2012 13:31, Dmitry Vasilyev wrote:
> > When replacing the MTA if you disable sendmail to rc.conf file
> > after adding the lines:
> > 
> > sendmail_enable="NO"
> > sendmail_submit_enable="NO"
> > sendmail_outbound_enable="NO"
> > sendmail_msp_queue_enable="NO"
> > 
> > lost all network connections to any local port IP4, but if you go
> > locally as root and execute the command ping any IP network, all
> > connections are restored
> 
> Just editing rc.conf like that won't have any effect on the running
> system.  You have to do something else -- in this case, killing
> sendmail before editing rc.conf and starting your preferred MTA after
> would be the minimum to achieve the intended effect.
> 
> To test fully though, you should reboot.  If the loss of connectivity
> is a consequence of rebooting, then it suggests that you're probably
> inadvertently modifying some other settings in rc.conf, or that the
> problem already existed and the changes to rc.conf are a red herring.

Quite.  Disabling sendmail (even if done properly and completely)
should not have any effect on the functioning of your basic networking
setup.  There has to be something else going on here.

> There have been some changes to the syntax used to configure IPv6
> addresses in 9.0 -- check rc.conf(5) for details -- but that doesn't
> seem entirely relevant here.  Hmmm... how about showing us your
> rc.conf to see if we can spot any problems?

As Matthew suggests, try rebooting and see what happens.  Send your
dmesg output and rc.conf to the list so we can get a clearer picture of
what's going on.

Best of luck,

Conrad

-- 
Conrad J. Sabatier
conrads@cox.net



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