kern/144572: [carp] CARP preemption mode traffic partially goes to backup node

[Eugene M. Zheganin]

The following reply was made to PR kern/144572; it has been noted by GNATS.

From: "Eugene M. Zheganin" <eugene at zhegan.in>
To: bug-followup at FreeBSD.org, emz at norma.perm.ru
Cc:  
Subject: Re: kern/144572: [carp] CARP preemption mode traffic partially goes
 to backup node
Date: Mon, 19 Dec 2011 10:36:47 +0600

 Please close this PR, looks like FreeBSD has nothing with it. In case 
 someone will find this thread here, I should notice that I got this in 
 setup like
 
 (A, B nodes with carp) <----ethernet---> catalyst <-----ethernet---> 
 cisco 2811
 
 Only the machines behind the 2811 router were affected. LAN was fine.
 
 In this scheme catalyst was correctly pointing the MAC address of the 
 carp to the port of the master node, but the traffic from the cisco 2811 
 router was going straight to the MAC address of the backup node (not to 
 the MAC address of the carp, which is rather weird, because the ARP 
 cache entry for the target IP was also pointing to the carp MAC 
 address). So I think this is the issue with cisco IOS, whic is, by the 
 way, 12.4(17a).
 
 Thanks for the help and time. Sorry for the false alarm.