Date: Wed, 19 Mar 1997 14:43:43 -0700 (MST) From: Softweyr LLC <softweyr@xmission.com> To: dlowe@sirius.com Cc: questions@freebsd.org Subject: Re: ppp strangeness Message-ID: <199703192143.OAA08645@xmission.xmission.com> In-Reply-To: <Pine.NXT.3.95.970317233701.27712A-100000@venus> from "David Lowe" at Mar 18, 97 00:07:50 am
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Davide Lowe recently lamented:
> I'm running FreeBSD 2.2-970310-GAMMA on a 486-80 with 12MB ram. The modem
> in question is a USRobotics 28.8 Sportster.
>
> I used to run user ppp without problems. Things that have changed since
> then: upgraded from 14.4 Sportster. upgraded from 2.1.5-RELEASE. and
> changed to an ISP with dynamic IP allocation :(
>
> The problems are as follows:
>
> 1 - The connection dies after some seemingly random interval. However,
> the line doesn't get hung up, the routes stay in place, and the
> interface stays marked as up. The ppp process starts going crazy
> and slurps up memory; doesn't respond to keys. At this point I kill
> -9 it from another shell, down the interface, delete the dead route,
> and re-do (all manually, so far). Not much fun.
This is most likely a modem problem; you need to tell your modem to
hangup when carrier detect goes away. Also, be sure to use a cuax
device to connect on in your configuration file.
> 2 - A problem that seems more strange. 'ppp -auto foo' seems to behave
> strangely. It claims to be working fine, but it ups the interface
> with a bogus route immediately (i.e.:
> # ifconfig tun0
> tun0: flags=8050<POINTOPOINT,RUNNING,MULTICAST> mtu 1006
> # ppp -auto foo
> <output seems to be happy...>
> # ifconfig tun0
> tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1006
> inet 10.255.255.254 --> 10.255.255.255 netmask 0xffffff00
When you run ppp -auto, it brings up the tun0 interface immediately so
you can route packets to it. If it gets a packet and doesn't have the
interface up, it will bring it up and fix the addresses and/or routes.
If the interface wasn't up, you couldn't route packets to it!
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.xmission.com/~softweyr softweyr@xmission.com
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