On 2012-Aug-22 15:35:01 -0400, John Baldwin <j...@freebsd.org> wrote: >Hmm. Perhaps we could use a debouncer to ignore "short" link flaps? Kind of >gross (and OpenBSD doesn't do this). For now this change basically ignores >link up events if they occur with 5 seconds of the link down event. The 5 is >hardcoded which is kind of yuck.
I'm also a bit concerned about this for similar reasons to adrian@. We need to distinguish between short link outages caused by (eg) a switch admin reconfiguring the switch (which needs the lease to be re-checked) and those caused by broken NICs which report link status changes when they are touched. Maybe an alternative is to just ignore link flaps when they occur within a few seconds of a script_go(). (And/or make the ignore timeout configurable). Apart from fxp(4), does anyone know how many NICs are similarly broken? Does anyone know why this issue doesn't bite OpenBSD? Does it have a work-around to avoid resetting the link, not report link status changes or just no-one has noticed the issue? BTW to jhb: Can you check your mailer's list configuration. You appear to be adding <freebsd-current@freebsd.org> and leaving <curr...@freebsd.org> in the Cc list. -- Peter Jeremy
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