should looking at an interface with 'ifconfig' trigger a change ?

Andrew Thompson thompsa at
Thu Aug 7 17:27:06 UTC 2008

On Thu, Aug 07, 2008 at 05:27:53PM +0100, Pete French wrote:
> I have a very odd problem here - two interfaces bundled using lagg
> in 'failover' mode, so one interface is active and the other not being
> used. if the carrier drops on the active one I expect it to
> failover, but it doesnt.
> ...until I type 'ifconfig bce0' to look at the status of the interface
> which has gone down. At which point it fails over properly!
> This is most odd - how can simply looking at the config of an
> interface trigger the failover ? It wont fail over otherwise either - you
> can leave it as long as you like and lagg wont realise that the active
> has gone down.
> The interfaces here are 'bce' by the way, if that make a difference....

The bce driver is not properly generating link state events.


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