PPP doesn't set the correct interface in 7-STABLE

[Andrew D]

Andy Dills wrote:
> I'm trying to setup pptpd to enable VPN connections. This worked well in 
> all versions of FreeBSD prior to 7.
> 
> Now, however, the interface in the routing table is incorrectly set to 
> that of the ethernet card, rather than the appropriate tun interface.
> 
> There is a months-old bug report detailing this:
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=122068&cat=
> 
> He mentions two workarounds:
> 
> there are two way to fix it.
> 1. use differenet subnet for vpn. Don't use the same subnet for vpn 
> routing. user-ppp will set the correct routing table.
> 2. downgrade to FreeBSD 6.2
> 
> #2 isn't really an option, and #1 isn't clear to me. I tried a couple of 
> different configurations and the interface never seems to get set 
> correctly.
> 

I have a similar problem on one server that I manage.

I run the following script every 30 secs.
not exactly elegant, but does the job.


#!/usr/local/bin/bash

LNET='10.10'  # local network
DEFIP='254'   # default gateway ip
INT='fxp0'    # interface

for i in `/usr/bin/netstat -nr |grep $INT |awk '{print $1}'|grep 
$LNET|grep -v $DEFIP|grep -v '/'`; do
  /sbin/route delete $i
done


for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
   IP=`ifconfig tun$i 2>/dev/null|grep inet|head -n 2 |tail -n 1|awk 
'{print $4}'`
   if [ -n "$IP" ];then
     RO=`netstat -nr | grep $IP |grep tun$i`
     if [ -z "$RO" ]; then
       /sbin/route add $IP -iface tun$i
     fi
   fi
done

HTH
cya
Andrew


> 
> Suggestions?
> 
> Thanks,
> Andy
> 
> ---
> Andy Dills
> Xecunet, Inc.
> www.xecu.net
> 301-682-9972
> ---
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