Initial connection problems

Thomas Schaaf thomas.schaaf
Sat Sep 1 23:52:34 PDT 2012

Hello Christian,

Sadly the suggested solution does not work. ( I altered your command
to reflect the correct IP so that is not the problem either. )
What I have discovered though is that I can even change the ip address
and am still able to connect successfully - after the first successful


2012/9/1 Christian Lamparter <chunkeey at>:
> On Saturday 01 September 2012 22:24:38 Thomas Schaaf wrote:
>> I am using hostapd to create an unencrypted wireless network. On
>> this machine I also have an FTP Server running. For my camera I
>> have the Canon WFT-E5 Adapter which provides the camera with the
>> possibility to connect to a provided WIFI Network and send images
>> via FTP.
>> The setup works occasionally.
>> The first time I connect to the network I get an IP from the DHCP
>> Server (as seen in syslog & camera config) but I am unable to ping the
>> camera and it is unable to send me images. Sadly there are no log
>> files provided by canon except the error message "Cannot connect to
>> FTP".
> What happens if you add an arp entry for your camera by hand after
> you start hostapd, but before the camera joins the network?
> arp -s 00:00:85:ff:81:cc
> (If this works, then I'm afraid you have to take your case to
> linux-wireless at and Cc rtlwifi maintainers:
> Larry Finger <Larry.Finger at>,
> Chaoming Li <chaoming_li at>. As it sounds like
> the AP driver/hw has problems with delivering broadcast
> frames (arp-requests in your case) at the "correct time"
> (i.e.: right after a DTIM beacon (every third beacon in
> your case / every ~307.4ms)).
> Regards,
>    Chr

Thomas Schaaf

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