Hi On Friday 30 December 2011, Josh Triplett wrote: > Ben Hutchings wrote: > > On Sat, 2010-07-31 at 16:56 -0500, Jonathan Nieder wrote: > > > Package: iw > > > Version: 0.9.19-1 > > > Severity: important > > > Justification: policy ยง2.5 > > > > > > aircrack-ng depends on iw, but the former is optional and the latter of > > > priority "extra". Please bump up the priority of iw to optional to > > > match. [...] > The description of the crda package doesn't really make it obvious why > users might want it. To enable wifi frequencies that some locales don't > permit, such as channels 12-14? That seems worthy of a Recommends at > most, and quite possibly just a Suggests.
Channel 12-14 in the 2.4 GHz and most (basically all) of 5 GHz, due to
only small overlaps between FCC (US), ETSI (EU) and JP (Japan) and
DFS[1] requirements; DFS support in mainline is still a work in
(active) progress. An overview for the regulatory subsystem of the
linux kernel (there is active cooperation with FreeBSD particularly in
regards to DFS) is available under [2].
crda/ iw and wireless-regdb are basically required to apply the
regulatory settings for modern wlan cards, both acting about regulatory
hints stored in the card's EEPROM/ OTP or, as intersection, received
through IEEE 802.11d from the access point and/ or based upon the local
configuration[3].
Regards
Stefan Lippers-Hollmann
[1] http://wireless.kernel.org/en/developers/DFS
[2] http://wireless.kernel.org/en/developers/Regulatory/
[3] /etc/default/crda
http://anonscm.debian.org/gitweb/?p=kernel/crda.git;a=blob;f=debian/crda.default
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