<p>Good idea. If I think about it I'll trace this next time I'm in a hotspot. </p>
<div class="gmail_quote">On May 27, 2014 2:54 AM, "Albert ARIBAUD" <<a href="mailto:albert.aribaud@free.fr">albert.aribaud@free.fr</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Donald,<br>
<br>
Le Mon, 26 May 2014 21:23:27 -0300, Donald Chisholm<br>
<<a href="mailto:donald.chisholm@gmail.com">donald.chisholm@gmail.com</a>> a écrit :<br>
<br>
> Hi all,<br>
><br>
> Recently I have noticed that on connect some wifi hotspots provide a popup<br>
> message indicating that the user must login to obtain Internet access.<br>
> Since the user has not yet opened a browser I figure this feature is<br>
> implemented via a DHCP option. I found references to the<br>
> proposed Captive-Portal identification in DHCP draft-wkumari-dhc-capport-00<br>
> (<a href="http://tools.ietf.org/html/draft-wkumari-dhc-capport-00" target="_blank">http://tools.ietf.org/html/draft-wkumari-dhc-capport-00</a>) which seems to be<br>
> what I am looking for but it does not mention a proposed option number.<br>
><br>
> Anyone here know what the option is called or can point me in the direction<br>
> of how this may be implemented.<br>
<br>
No idea about the option number (rather than 'name') since it still is<br>
TBA in the RFC, but if you know of a hotspot which does this, you can<br>
set up a machine with tcpdump or wireshark running, connect to the<br>
hotspot , and see for yourself.<br>
<br>
Implementing the option in dnsmasq should not prove difficult, as I<br>
guess it is just a matter of adding the right dhcp-option line in your<br>
dnsmasq configuration.<br>
<br>
> Thank you for reading,<br>
><br>
> Doanld<br>
<br>
Amicalement,<br>
--<br>
Albert.<br>
</blockquote></div>