bin/144572: CARP preemption mode traffic partially goes to backup node

[Eugene M. Zheganin]

>Number:         144572
>Category:       bin
>Synopsis:       CARP preemption mode traffic partially goes to backup node
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 09 10:30:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Eugene M. Zheganin
>Release:        8.0-RELEASE-p2
>Organization:
Norma JSC.
>Environment:
FreeBSD asterisk-omega 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #4: Thu Feb 18 15:37:02 YEKT 2010     emz at ns.hq.norma.perm.ru:/usr/obj/usr/src/sys/ASTERISK  i386
>Description:
I have net/asterisk16 setup on two nodes: one main and one backup. I use carp for redundancy. After upgrade to 8.0 I noticed that voice traffic partially goes to backup node. I've checked packet loss (none found) and packet count in tcpdump running on both hosts. Packet count seems to be identical.

I would be glad to help locate the exact source of the problem, but right now I have no idea about what other information I should supply.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: