Date: Sun, 21 Jan 2001 15:18:19 +0100 From: Maurice klein Gebbinck <maurice@tunix.nl> To: freebsd-questions@freebsd.org Cc: maurice@tunix.nl Subject: ppp simultaneous dialin and dialout Message-ID: <3A6AEFAB.DFA9B380@tunix.kun.nl>
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Hi,
After many evenings and a whole weekend of experimenting, I am stuck at
the following problem. To connect my computer at home to the intranet at
work I start up "ppp -auto ppp-dialout" at boot. This works flawlessly.
To build up connections from the intranet to my computer at home in case
the dialout link is not present, I have installed mgetty in AutoPPP
mode, resulting in "ppp -direct ppp-dialin". Also this works flawlessly.
The problem is that I cannot get them both to work at the same time.
The ppp-dialout stuff results in a tun0 being set up from 192.168.16.1
(home) to 172.16.2.12 (work), and a default route to 172.16.2.12 via
tun0. When there is an incoming connection, a tun1 is set up from
192.168.16.1 (home) to 172.16.2.12 (work), with a default route to
172.16.2.12 via tun1. To avoid conflicts, I made the ppp-dialin in
section ppp.conf to reconfigure the tun0 interface and delete the
default route via tun0. This is ugly and I hope there is a more elegant
way, but it works. However, when the dialin connection via tun1 is
finished, I want to restore the configuration of tun0 as well as the
default route, but so far I have been unsuccessful. These are my
configuration files:
ppp.conf
========
default:
set log Phase Chat LCP IPCP CCP tun command
set device /dev/cuaa0
set speed 115200
set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \"\" AT \
OK-AT-OK ATZ OK \\dATDT\\T TIMEOUT 40 CONNECT"
ppp-dialout:
set phone ********
set authname ********
set authkey ********
set ifaddr 192.168.16.1 172.16.2.12 255.255.255.0 0.0.0.0
add default HISADDR
ppp-dialin:
enable chap
shell /sbin/ifconfig tun0 10.1.1.1 10.1.1.2
shell /sbin/route delete default
set ifaddr 192.168.16.1 172.16.2.12 255.255.255.0 0.0.0.0
add default HISADDR
ppp.linkdown
============
ppp-dialin:
shell /sbin/ifconfig tun0 192.168.16.1 172.16.2.12
shell /sbin/route add default 172.16.2.12
When the dialin connection is finished, tun0 is setup again from
192.168.16.1 (home) to 172.16.2.12 (work), but with "netstat -rn" I can
see that the following routes are missing:
default 172.16.2.12 UGSc 6 0 tun0
172.16.2.12 192.168.16.1 UH 7 0 tun0
I tried already a million things, but nothing seems to be able to
restore the original routing table. Can anyone point me in the right
direction?
Thanks,
Maurice
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