kern/98622: [carp] carp with IPv6 broken on 6.1 (regression)

Gavin Atkinson gavin.atkinson at
Thu Jul 27 16:10:24 UTC 2006

The following reply was made to PR kern/98622; it has been noted by GNATS.

From: Gavin Atkinson <gavin.atkinson at>
To: bug-followup at, Philippe.Pegon at
Cc: ume at
Subject: Re: kern/98622: [carp] carp with IPv6 broken on 6.1 (regression)
Date: Thu, 27 Jul 2006 17:03:40 +0100 (BST)

 I can confirm this worked in 6.0-R and is broken in 6.1-R, and I can 
 confirm it was the commit by ume at mentioned in the past log
 entries of this PR that broke it:
 In my case, I don't see the backup constantly switching, instead I see 
 both the master and backup constantly acting as master, but only on the 
 IPv6 interface - the IPv4 interface works as expected.  This difference 
 could be due to te fact that I have the IPv4 interface on this machine 
 also under carp's control, although I do have sysctl 
 net.inet.carp.preempt=1, which in theory should mean that all interfaces 
 track each other's state.

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