sniffer: packet bursts get lost on pba-d-01-kw2x

[pyropeter]

While trying to move away from our old econotag-based sniffer setup, I noticed that RIOTs sniffer seemed to drop some packets. I generated traffic on a RaspberryPi with Openlabs-Module using the following command:

# ping -s 100 -c1 ff02::1%lowpan0

This requires 6lowpan to use fragmentation, resulting in two succesive IEEE 802.15.4 frames being transmitted.

While the econotag correctly receives both, the sniffer app on a pba-d-01-kw2x only receives the first frame. I guess this is some kind of race condition. How would I go about debugging this?

[PeterKietzmann]

I have no default procedure at hand but this might be related to RIOT-OS/RIOT#4822. If so, please reopen that issue and report there.

[smlng]

Can you try to ping the nodes link-local unicast address instead of using multicast, also ensure that ACKREQ is enabled on the Raspbian.

[jowlo]

I can reproduce this bug on a different board, forked off of frdm-kw41z with pretty much identical hardware.

[miri64]

@jowlo @smlng @pyropeter can you test, if this is fixed by #34?