hostapd dual band simultaneous

Christian Lamparter chunkeey at
Sun Jan 8 08:53:37 EST 2012

On Sun, Jan 8, 2012 at 1:21 PM, Craig Johnson <crajohns at> wrote:
> I apologize if this is an easy question, but I've been pulling my hair
> out trying to figure out how to make this work.
> I've got an AR9380 mini-pci card trying to make it work with hostapd
> as an access point in both 2.4ghz and 5ghz simultaneously.  I can see
> the bands in both 2.4 and 5ghz available, but of course I can only
> select hw_mode=g or hw_mode=a.  I know this card can do them
> simultaneously; the question is how do I configure it?  Launching
> multiple hostapd daemons (one for 2.4, one for 5ghz) only makes them
> step on each other.  Running latest hostap from git and a very recent
> compat-wireless.
> Any assistance would be greatly appreciated - I feel like I'm missing
> something simple, but I haven't found a configuration to make this
> work.
Are you sure, your card actually has two independent radios and MAC?
Most cards don't. You probably need to buy another card [can be a cheaper
2.4GHz Band only card, if such a thing is available]

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