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Date:      Thu, 09 Oct 2008 20:36:14 -0400
From:      Mike Tancsa <mike@sentex.net>
To:        Andrew D <andrewd@webzone.net.au>, "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Userland PPP not deleting old IP on disconnect
Message-ID:  <200810100036.m9A0aMCi078828@lava.sentex.ca>
In-Reply-To: <48EDF787.2010305@webzone.net.au>
References:  <200810092206.02362.doconnor@gsoft.com.au> <48EDF787.2010305@webzone.net.au>

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At 08:22 AM 10/9/2008, Andrew D wrote:
>Hi Fellow Node user :),
>
>I have the same + similar issue.

Hi,
         What about adding

disable iface-alias

          iface-alias
              Default: Enabled if -nat is specified.  This option simply tells
              ppp to add new interface addresses to the interface rather than
              replacing them.  The option can only be enabled if network
              address translation is enabled (``nat enable yes'').

              With this option enabled, ppp will pass traffic for old interface
              addresses through the NAT engine (see libalias(3)), resulting in
              the ability (in -auto mode) to properly connect the process that
              caused the PPP link to come up in the first place.

              Disabling NAT with ``nat enable no'' will also disable
              `iface-alias'.

>Daniel O'Connor wrote:
>>Hi,
>>I am using userland PPP to do PPPoE and I am finding that it isn't 
>>deleting the old IP from tun0 when the link goes down, eg
>>Oct  9 22:00:01 midget ppp[53728]: tun0: Phase: deflink: logout -> hangup
>>Oct  9 22:00:01 midget ppp[53728]: tun0: Phase: deflink: Connect 
>>time: 950 secs: 2711068 octets in, 39993514 octets out
>>[midget 22:00] ~ >ifconfig tun0
>>tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
>>         inet 121.45.251.180 --> 203.16.215.184 netmask 0xffffffff
>>         Opened by PID 53728
>
>tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1492
>         inet 121.45.215.128 --> 203.16.215.183 netmask 0xffffffff
>         inet 121.45.69.26 --> 203.16.215.186 netmask 0xffffffff
>         Opened by PID 90863
>
>The second line only shows up when the gateway is different between 
>IP assignments from the ISP. I have no idea if this blocks access to 
>the previous IP, not that it's a major issue.
>
>uname -a
>FreeBSD gateway.abdulla 7.0-STABLE FreeBSD 7.0-STABLE #1: Sat Jun 21 
>03:10:37 CST 2008     root@gateway.abdulla:/usr/obj/usr/src/sys/MYKERN  i386
>
>My ppp setup is almost the same.
>
>Cheers
>cya
>Andrew
>
>>I have the following config..
>>default:
>>  set device /dev/cuaa0
>>  set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \"\" AT \
>>            OK-AT-OK ATE1Q0 OK \\dATDT\\T TIMEOUT 40 CONNECT"
>>  set speed 115200
>>  set ctsrts on
>>  set server /var/run/ppp/tun%d foobar
>>  set urgent tcp 22
>>  set urgent udp 27010 27011 27012 27013 27014 27015 27016 27017 
>> 27018 27019 27020 27960 14577 14578 14579 14580
>>  set log Phase Chat IPCP CCP tun command connect
>>internode:
>>  set device PPPoE:em0
>>  set ifaddr 0.0.0.0/0 0.0.0.0/0
>>  resolv readonly
>>  disable pap
>>  enable dns
>>  set cd 5
>>  set dial
>>  set login
>>  set redial 5+30-120 0
>>  enable lqr
>>  enable echo
>>  set lqrperiod 3
>>  set reconnect 10 100000
>>  set authname username
>>  set authkey password
>>  add default HISADDR
>>I don't have any linkup/linkdown scripts..
>>Any one have an idea why this would be happening?
>>System is a FreeBSD midget.dons.net.au 7.0-STABLE FreeBSD 
>>7.0-STABLE #1: Sun Jun  1 19:20:18 CST 
>>2008     darius@midget.dons.net.au:/data/obj/data/src/sys/GENERIC  i386
>>Thanks.
>
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