Date: Fri, 23 Mar 2001 23:11:56 +0000 From: Brian Somers <brian@Awfulhak.org> To: "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: <200103232311.f2NNBu716473@hak.lan.Awfulhak.org> In-Reply-To: Message from Ruslan Ermilov <ru@freebsd.org> of "Mon, 19 Mar 2001 17:36:08 %2B0200." <20010319173608.A64735@sunbay.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> > Do you mean that "add" PPP command now intentionally broken for any > > address excepting *ADDR? Then, what is the reason to have numeric argument > > there? Or do you mean that PPP must be fixed now? Where is the fix? > > > I mean that: > > 1. If you use HISADDR, ppp(8) will automatically re-add route after link > is brought down and then back up. > > 2. If you use static IP address in ppp.conf, ppp(8) will add that route > only once. This route will also cache local interface address at the > time the route is added. Execute `route -vn get default' to see what > I am talking about. > > 3. The routing code was fixed to delete routes which use non-existent > interface addresses. This code will wipe such a route. > > 4. If you need routes with static gateway addresses, put `add!' command > to ppp.linkup script. This way, routes will be activated every time > the link is up, and will use the correct source IP address. > > 5. This affects not only ppp(8). Add default route that points to the > LAN; change the IP address on interface; observe that the default > route has gone away. The reason is that if we don't do this, we > may end up using the old (now non-existing) local IP address. I've thought about this quite a bit... I'm not sure that I understand the problem. I know of two (static IP) scenarios: 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 ? Cheers. > Cheers, > -- > Ruslan Ermilov Oracle Developer/DBA, > ru@sunbay.com Sunbay Software AG, > ru@FreeBSD.org FreeBSD committer, > +380.652.512.251 Simferopol, Ukraine > > http://www.FreeBSD.org The Power To Serve > http://www.oracle.com Enabling The Information Age -- Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org> <http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org> Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200103232311.f2NNBu716473>