[libvirt] [tck PATCH v2 3/5] filter for proper IP address in tcpdump looking for broadcast packet

Daniel P. Berrangé berrange at redhat.com
Fri Feb 9 10:20:50 UTC 2018


On Thu, Feb 08, 2018 at 02:19:37PM -0500, Laine Stump wrote:
> In the no-mac-broadcast test, a ping is sent to 192.168.122.255, but
> tcpdump is set to look for packets with a destination IP of
> 255.255.255.255. Change it to check for the correct IP address and
> also for mac broadcast (which is what the no-mac-broadcast filter
> actually looks at). This should eliminate the "false success" that was
> happening because tcpdump wasn't actually seeing the broadcast packet
> the guest was sending, as well as catching the "false failure" caused
> by tcpdump seeing other traffic from the guest unrelated to the test
> (which happened to be broadcasts sent to 255.255.255.255).
> 
> Signed-off-by: Laine Stump <laine at laine.org>
> ---
> 
> Unchanged from V1, it just had no review.
> 
>  scripts/nwfilter/230-no-mac-broadcast.t | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Daniel P. Berrangé <berrange at redhat.com>

Regards,
Daniel
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