On Sat, Apr 04, 2015 at 10:35:07PM -0400, Ed Maste wrote:
>
> On 4 April 2015 at 12:56, Kevin Lo <ke...@freebsd.org> wrote:
> >> Kevin, what failure mode did you observe?
> >
> > On FreeBSD, multicast is enabled on the interface by default, the value of
> > ifr_flags could be negative if multicast is enabled.
>
> Right, but what actually happens in this case? The sign extension bug
> means it will appear as if the flags in ifr_flagshigh are set (and
> perhaps those flags will be written back to the kernel, too). But I
> could see certain use cases being unaffected by the bug.
>
> To rephrase my original question perhaps: how did you discover the
> bug? It doesn't matter in terms of the correctness of your fix; I'm
> just curious about the fact that we didn't discover it for so long.
As I mentioned earlier, ovs doesn't work at all.
Please run the following command:
# ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
# ovs-vsctl add-port br0 em0
# ifconfig em0 0
# dhclient br0
> -Ed
Kevin
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