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README: advice to manually set 5GHz channel first

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vanhoefm 2021-08-16 22:43:24 +02:00 committed by GitHub
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@ -852,6 +852,10 @@ allowed to send normal frames. This is because in the function `ieee80211_monito
to inject frames when `cfg80211_reg_can_beacon` returns false. As a result, Linux may refuse to to inject frames when `cfg80211_reg_can_beacon` returns false. As a result, Linux may refuse to
inject frames even though this is actually allowed. Making `cfg80211_reg_can_beacon` return true inject frames even though this is actually allowed. Making `cfg80211_reg_can_beacon` return true
under the correct conditions prevents this bug. under the correct conditions prevents this bug.
In practice, some people have found that you must first manually set the wireless network card to
the 5GHz channel that the AP is operating on. See [this GitHub issue](https://github.com/vanhoefm/fragattacks/issues/33#issuecomment-898712082)
for details.
<a id="id-handling-sleep"></a> <a id="id-handling-sleep"></a>
## 9.6. Handling sleep mode ## 9.6. Handling sleep mode