Dmitry Eremin-Solenikov wrote:
> Again, have you seen the problem with PHR in wild, or is just smart
> thought?

Yes, I've seen it in real life, usually in the presence of background
WLAN traffic. The following three types of corruption happen
frequently if there are interferences:

[ 4897.570000] ieee802154: Bad frame received (type = 4)
[ 4981.920000] security support is not implemented
[ 6099.450000] at86rf230 spi2.0: invalid PHR 0xfa

Before I added the PHR check, I would regularly find my systems
crashed after letting them sit idle (but receiving) for a few hours.

With CSMA and CRC checking, the number of such events should drop,
but every once in a while, something would still slip through.

- Werner

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