PiBox » Iron Man » Monitor

Check the output of iw list for the wlan0 interface:

$ iw list
...
        valid interface combinations:
                 * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,
                   total <= 2048, #channels <= 1, STA/AP BI must match

Note "#channels <= 1". This means both client and AP must use the same channel, even if the user specifies a different channel. If this value is 2 or more then they can use different channels.

This has to be handled by S40network at bring up time. It must

1. Check how many channels it can use.
2. If only 1
   1. Find wlan0 channel
   2. Update hostapd.conf channel entry.