From nobody@FreeBSD.org  Mon Feb  5 09:21:41 2007
Return-Path: <nobody@FreeBSD.org>
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 602CF16A400
	for <freebsd-gnats-submit@FreeBSD.org>; Mon,  5 Feb 2007 09:21:39 +0000 (UTC)
	(envelope-from nobody@FreeBSD.org)
Received: from www.freebsd.org (www.freebsd.org [69.147.83.33])
	by mx1.freebsd.org (Postfix) with ESMTP id 38F8F13C442
	for <freebsd-gnats-submit@FreeBSD.org>; Mon,  5 Feb 2007 09:21:39 +0000 (UTC)
	(envelope-from nobody@FreeBSD.org)
Received: from www.freebsd.org (localhost [127.0.0.1])
	by www.freebsd.org (8.13.1/8.13.1) with ESMTP id l159LbSh025174
	for <freebsd-gnats-submit@FreeBSD.org>; Mon, 5 Feb 2007 09:21:37 GMT
	(envelope-from nobody@www.freebsd.org)
Received: (from nobody@localhost)
	by www.freebsd.org (8.13.1/8.13.1/Submit) id l159LbKY025173;
	Mon, 5 Feb 2007 09:21:37 GMT
	(envelope-from nobody)
Message-Id: <200702050921.l159LbKY025173@www.freebsd.org>
Date: Mon, 5 Feb 2007 09:21:37 GMT
From: Prokofiev Sergey<proks@uptel.net>
To: freebsd-gnats-submit@FreeBSD.org
Subject: carp, vlan, routing : trouble or feature ?
X-Send-Pr-Version: www-3.0

>Number:         108789
>Category:       kern
>Synopsis:       carp, vlan, routing : trouble or feature ?
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Feb 05 09:30:14 GMT 2007
>Closed-Date:    Mon Feb 05 09:37:52 GMT 2007
>Last-Modified:  Mon Feb 05 09:37:52 GMT 2007
>Originator:     Prokofiev Sergey
>Release:        6.2-STABLE
>Organization:
Telnet
>Environment:
FreeBSD freebsd.uptel.net 6.2-STABLE FreeBSD 6.2-STABLE #0: Wed Jan 17 15:07:27 EET 2007     proks@freebsd.uptel.net:/usr/obj/usr/src/sys/ROUTER  i386
>Description:

I have a problem with CARP on FreeBSD 6.2 in the following scheme:


  +--------------+       +-----------------------+        +-----------------+
  |     A        |       |          B            |        |       C         |
  |       vlan20 |--//-->| vlan20         vlan10 |---//---| vlan10          |
  +--------------+       +-----------------------+        +-----------------+


  vlan20 10.10.10.2/26     vlan20 10.10.10.1/26
  gateway 10.10.10.1       vlan10 10.10.9.1/26            vlan10 10.10.9.2/26

                           carp10 10.10.9.3/26            carp10 10.10.9.3/26
                                      advskew 0                      advskew 1
                           carp11 10.10.9.4/26            carp11 10.10.9.4/26
                                      advskew 1                      advskew 0


i.e. server B MASTER for 10.10.9.3/26, BACKUP for 10.10.9.4/26
      server C BACKUP for 10.10.9.3/26, MASTER for 10.10.9.4/26


But if to send icmp request from server A -> to server C on ip 10.10.9.4, 
server B replay from BACKUP iface carp11 !?!?


This is trouble or feature of realization ?????
-------------------------------------------------

serverB> ifconfig carp*
carp10: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
         inet 10.10.9.3 netmask 0xffffffc0
         carp: MASTER vhid 100 advbase 1 advskew 0
carp11: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
         inet 10.10.9.4 netmask 0xffffffc0
         carp: BACKUP vhid 101 advbase 1 advskew 1

/etc/sysctl.conf:
net.inet.carp.preempt=1

serverC> ifconfig carp*
carp10: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
         inet 10.10.9.3 netmask 0xffffffc0
         carp: BACKUP vhid 100 advbase 1 advskew 1
carp11: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
         inet 10.10.9.4 netmask 0xffffffc0
         carp: MASTER vhid 101 advbase 1 advskew 0

/etc/sysctl.conf:
net.inet.carp.preempt=1



>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: remko 
State-Changed-When: Mon Feb 5 09:37:49 UTC 2007 
State-Changed-Why:  
please refer to the 
http://lists.freebsd.org/mailman/listinfo/freebsd-net mailinglist and 
ask your question there. This is not a problem ticket but an user 
question. Thanks for using FreeBSD ! 

http://www.freebsd.org/cgi/query-pr.cgi?pr=108789 
>Unformatted:
