CARP behaviour

[Yar Tikhiy]

On Sat, Mar 03, 2007 at 12:03:05AM +0000, Bruce M Simpson wrote:
> During testing of M_PROMISC I noticed a couple of issues with our CARP.
> 
> 1. carp doesn't seem to maintain input/output statistics on its ifnet.

This should be OK.  A carp(4) interface is just a place for CARP
settings to live.  No real traffic passes through it.

> 2. carp doesn't seem to detect that the underlying route to the subnet
>   its address is exposed on changed to another interface.

I seem to recollect that I ran into this issue, too.  Of course,
it's a bug.  CARP apparently caches the old route forever.  It
should track such a change if it doesn't yet.  We have a sort of
notification for the event, don't we?  The userland has the routing
socket for that, but I don't remember about the kernel.

Thank you for paying attention to that!

-- 
Yar