Re: [Patch v9 10/16] AP: Support Extended Key ID

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On Sat, Jan 04, 2020 at 11:10:09PM +0100, Alexander Wetzel wrote:
> Support Extended Key ID in hostapd according to IEEE 802.11-2016.
> 
> Extended Key ID allows to rekey pairwise keys without the otherwise
> unavoidable MPDU losses on a busy link. The standard is fully backward
> compatible, allowing an AP to serve STAs with and without Extended Key
> ID support in the same BSS.

The standard may claim to be fully backwards compatible, but that does
not mean there would be guarantee of no regressions or interop issues if
this were enabled.. I'd consider getting this in first with default
being the functionality being disabled. Once there is some more trust in
this actually working and not causing problems (e.g., an independent
implementation to test against), the default could be changed in the
future.

-- 
Jouni Malinen                                            PGP id EFC895FA

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