Date: Thu, 16 Jun 2005 10:54:12 +0600 From: Boris Kovalenko <boris@ntmk.ru> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/82306: PPP ip-pool regression due CARP implementation Message-ID: <E1DimOK-000LYC-UN@boris.nikom.ru> Resent-Message-ID: <200506160500.j5G50iiK074410@freefall.freebsd.org>
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>Number: 82306
>Category: bin
>Synopsis: PPP ip-pool regression due CARP implementation
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Jun 16 05:00:43 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Boris Kovalenko
>Release: FreeBSD 5.4-STABLE i386
>Organization:
JSC "TAGNet"
>Environment:
System: FreeBSD boris.nikom.ru 5.4-STABLE FreeBSD 5.4-STABLE #1: Wed May 11 09:37:01 YEKST 2005 root@boris.nikom.ru:/usr/obj/usr/src/sys/BSYS i386
>Description:
I use FreeBSD as PPPoE dialin server. The configuration is very simple
pppoe:
enable pap
disable chap
allow mode direct
set mru 1492
set mtu 1492
set speed sync
set ifaddr x.x.x.254 x.x.x.225-x.x.x.250 255.255.255.255
set dns x.x.x.1
enable dns
accept dns
set timeout 3600
enable lqr echo
set lqrperiod 15
set echoperiod 15
There was no problems with this configuration in 4.9 and 5.2.1 branches. But when I
have upgraded to 5.4 - ppp began to assign duplicate ips to clients!!! So, clients
are stop working. Gleb Smirnoff explained that problem is with CARP implementation
where some check for duplicating ips was removed from kernel. But this makes
/usr/sbin/ppp ip-pool feature useless, and even this is regression!
Now we can not use ppp without RADIUS (which should support of ip-pool feature itself).
>How-To-Repeat:
Try to make ppp dialin server with 5.4 and connect many clients to it
>Fix:
Really don't know how. But IMHO we should introduce some option like (disable carp)
and implement duplicate ip checking in ppp code.
>Release-Note:
>Audit-Trail:
>Unformatted:
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