dhclient fails to obtain the IP address from some WiFi networks

[Christian]

Hi, 
I have had a similar case last week with an old notebook, and learned that some network cards didn‘t support a feature called PMF - Protected Management Frames (ieee 802.11w-2009).

So I disabled this ( more or less senseless, as the internet says) Feature on my fritzboxRouter and the card went online. 
--

> Am 23.03.2019 um 11:07 schrieb Eugene Grosbein <eugen at grosbein.net>:
> 
> 23.03.2019 1:31, Yuri wrote:
> 
>> The laptop was getting the wifi connection right away, but dhclient was consistently failing to obtain the IP address.
>> 
>> 
>> Here are the ktrace dumps of the dhclient process of two instances of such failure:
>> 
>> * https://people.freebsd.org/~yuri/dump-dhclient-failure-1.txt
>> 
>> * https://people.freebsd.org/~yuri/dump-dhclient-failure-2.txt
>> 
>> 
>> The wifi driver was if_run.
>> 
>> 
>> Can anybody tell why did dhclient fail?
> 
> There was several important changes to dhclient not so long ago.
> Please describe the case in detail, including exact branch and revision of your FreeBSD system
> and relevant messages of "dmesg -a" output. And output of tcpdump too, if possible.
> 
> 
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