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Date: Thu, 18 Oct 2007 10:47:57 GMT
From: Klavs Klavsen <kl@vsen.dk>
To: freebsd-gnats-submit@FreeBSD.org
Subject: CARP interfaces causes packet loss
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>Number:         117293
>Category:       kern
>Synopsis:       [carp] CARP interfaces causes packet loss
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    glebius
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct 18 10:50:01 UTC 2007
>Closed-Date:    Mon Jun 16 07:45:16 UTC 2008
>Last-Modified:  Mon Jun 16 07:45:16 UTC 2008
>Originator:     Klavs Klavsen
>Release:        6.2-Release-p7
>Organization:
>Environment:
FreeBSD carptest01.example.dk 6.2-RELEASE-p7 FreeBSD 6.2-RELEASE-p7 #8: Tue Oct 16 16:11:14 CEST 2007     root@buildhost.example.dk:/usr/obj/usr/src/sys/ExampleFW  i386

>Description:
fping (and ping -f) pinging through the firewall, gives me
a packet loss. fping in nagios, reports up to 55% packet loss :( - a ping
-f gives me 1-3%, but bad enough :(

pinging from the firewall itself, to one of the hosts, that packets are
lost to (when pinging from other networks) does not give any packet loss.

If I disable the CARP config in /etc/rc.conf.local, using the same firewall
rules (except for changing the $if vars back to bge0/em0 etc.) the packet
loss is gone.

I did not have a backup (CARP wise) host running during my tests.
>How-To-Repeat:
Setup CARP.
>Fix:


>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->freebsd-net 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Mon Oct 22 01:54:35 UTC 2007 
Responsible-Changed-Why:  
Over to maintainer(s). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=117293 
Responsible-Changed-From-To: freebsd-net->glebius 
Responsible-Changed-By: kmacy 
Responsible-Changed-When: Thu Nov 15 22:46:04 UTC 2007 
Responsible-Changed-Why:  

glebius is the current acting maintainer for carp 

http://www.freebsd.org/cgi/query-pr.cgi?pr=117293 
State-Changed-From-To: open->closed 
State-Changed-By: glebius 
State-Changed-When: Mon Jun 16 07:44:28 UTC 2008 
State-Changed-Why:  
Appeared to be not a FreeBSD problem, according to 

http://lists.freebsd.org/pipermail/freebsd-net/2007-November/015828.html 

http://www.freebsd.org/cgi/query-pr.cgi?pr=117293 
>Unformatted:
