hostapd does not issue EAP Identify challenge

Bob Friesenhahn bfriesen at
Sat Feb 3 06:31:32 PST 2018

On Sat, 3 Feb 2018, Jouni Malinen wrote:

> On Thu, Feb 01, 2018 at 05:33:06PM -0600, Bob Friesenhahn wrote:
>> Under Linux (a MIPS-based router/bridge device), I am using hostapd with the
>> 'wired' driver (no Wi-Fi support included) and am encountering the issue
>> that while authentication is successful if the supplicant issues an
>> unsolicited identity request (e.g. due to unplug/plug the Ethernet cable),
>> hostapd does not itself initiate authentication by periodically transmitting
>> EAP-Request Identity frames (to address 01:80:C2:00:00:03) after being
>> started.
> There is no support within hostapd to initiate EAPOL authentication with
> the 'wired' driver, i.e., getting something like this working would
> depend on external components detecting a port change (cable plugged in)
> or some other triggers for initiating.

We can implement that in hostapd based on the environment we are 
running it in, just as we externally implemented data-path control 
based on successful authentication.

Can you suggest a place in the code to add detection of port change or 
adding a trigger to get EAPOL initiated?  Is this an optional driver 
feature which is simply lacking for the wired driver but implemented 
in other drivers?


Bob Friesenhahn
bfriesen at,
GraphicsMagick Maintainer,

More information about the Hostap mailing list