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Date:      Mon, 26 Mar 2001 09:42:02 +0300
From:      Ruslan Ermilov <ru@FreeBSD.ORG>
To:        Brian Somers <brian@Awfulhak.org>
Cc:        "Andrey A. Chernov" <ache@nagual.pp.ru>, current@FreeBSD.ORG, brian@FreeBSD.ORG
Subject:   Re: Recent interface/routing changes breaks on-demand PPP
Message-ID:  <20010326094202.A97610@sunbay.com>
In-Reply-To: <200103250146.f2P1kMf65048@hak.lan.Awfulhak.org>; from brian@Awfulhak.org on Sun, Mar 25, 2001 at 02:46:22AM %2B0100
References:  <brian@Awfulhak.org> <200103250146.f2P1kMf65048@hak.lan.Awfulhak.org>

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On Sun, Mar 25, 2001 at 02:46:22AM +0100, Brian Somers wrote:
> > > On Fri, Mar 23, 2001 at 23:11:56 +0000, Brian Somers wrote:
> > > > 1. Ppp is in -auto mode (or a ``set mode auto'' has been done).  
> > > >    Here, ppp configures the interface as soon as it sees the ``set 
> > > >    ifaddr'' line and never undoes that configuration.  An ``add'' 
> > > >    with a fixed IP number would never have worked if it's before the 
> > > >    ``set ifaddr''.  If it's after the ``set ifaddr'', nothing should 
> > > >    ever remove it (as the interface will stay configured).
> > > > 
> > > > 2. Ppp is not in -auto mode.  Here, ppp won't assign the interface 
> > > >    address 'till IPCP is up.  Any attempt to ``add'' a route with a 
> > > >    static IP number in ppp.conf should fail.
> > > > 
> > > > So, the recent routing changes shouldn't have made a difference.
> > > > 
> > > > Anyone know what I'm missing ?  Andre, what does your ppp.conf look 
> > > > like and how are you running ppp ?
> > > 
> > > ppp in -auto mode, "add" is after "set ifaddr"
> > 
> > In which case your interface should stay configured despite the link 
> > coming down and your route should *not* be deleted.
> > 
> > I'll see if I can reproduce this here (I need to upgrade a machine 
> > first).
> 
> This was happening because ppp was deleting then re-adding the 
> interface address when IPCP came up, causing the new routing code to 
> nuke the static route.  I've added an optimisation to stop this from 
> happening, so your configuration should work ok again with 
> src/usr.sbin/ppp/iface.c 1.17.
> 
You mean, ppp(8) does not do this now if negotiated address does not change?


-- 
Ruslan Ermilov		Oracle Developer/DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

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