I can confirm Scott's words - I was one of the people with the problem.

My results where exactly the same as you are seeing (except mine was only on 
one interface).  Carp multicasts stuff on the interface at regualr intervals 
and expects to see multicasts from the other system coming in.  It is the 
frequency of these multicasts that determines who is master, and who slave.

The advskew 100 simply slows down the multicast rate of the slave.

The fact that both systems are master means that they are not seeing each 
others multicasts.

In my case the problem was caused by having a switch that was divided into 
different VLANs (by port).  The two systems where plugged into the same 
switch, but not into the same VLAN.  Once I had discovered this (by plugging 
them into the correct ports) the problem was fixed instanltly.

Cheers

Peter

On Thursday 04 May 2006 16:20, Scott Ullrich wrote:
> Check the archives, others have had this problem and it ended up being
> connectivity issues from a switch.
>
> On 5/4/06, Ispánovits Imre <[EMAIL PROTECTED]> wrote:
> > On Thu, 4 May 2006 15:10:16 +0200
> >
> > "Holger Bauer" <[EMAIL PROTECTED]> wrote:
> > > Even with preemption disabled you should not have 2 masters. A disabled
> > > preemption only means you more or less have a randomly chosen master
> > > and another node will become master only if the original master fails.
> > > You get some information on how CARP is set up when running ifconfig.
> > >
> > > Holger
> >
> > For the carp interfaces ifconfig tells the following:
> >
> > On pfSense1:
> > carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 194.143.231.165 netmask 0xfffffff8
> >         carp: MASTER vhid 1 advbase 1 advskew 0
> > carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 192.168.0.8 netmask 0xfffffc00
> >         carp: MASTER vhid 2 advbase 1 advskew 0
> > carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 194.143.231.116 netmask 0xfffffff8
> >         carp: MASTER vhid 3 advbase 1 advskew 0
> > carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 10.0.254.4 netmask 0xffffff00
> >         carp: MASTER vhid 4 advbase 1 advskew 0
> >
> > On pfSense2:
> > carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 194.143.231.165 netmask 0xfffffff8
> >         carp: MASTER vhid 1 advbase 1 advskew 100
> > carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 192.168.0.8 netmask 0xfffffc00
> >         carp: MASTER vhid 2 advbase 1 advskew 100
> > carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 194.143.231.116 netmask 0xfffffff8
> >         carp: MASTER vhid 3 advbase 1 advskew 100
> > carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
> >         inet 10.0.254.4 netmask 0xffffff00
> >         carp: MASTER vhid 4 advbase 1 advskew 100
> >
> > What's next?
> > Best regards
> > Imre
> > --
> > Skype: ispanovits_imre
> > This is Linux Land.
> > In silent nights you can hear the windows machines rebooting
>
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