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<div>Hi Simon,</div>
<div>thank you for your answer.</div>
<div>I confirm no --dhcp-broadcast option.</div>
<div> </div>
<div>I dont really want to bother too much... but if you could just give me a couple of examples of that last thing.</div>
<div>I mean, could you just give me a simple example of "hardware address length field is zero or greater than 16"?</div>
<div>
<div>And/or a simple example of "hardware address type field is zero."?</div>
<div>We talking about the <mac dongle>?</div>
<div>Or, how can I check on Linux the "hardware address length field" and "hardware address type"?</div>
<div> </div>
<div>After that I promise I wont bother anymore ;)</div>
<div>Thanks</div>
<div> </div>
<div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px; border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div style="margin:0 0 10px 0;"><b>Sent:</b> Wednesday, September 26, 2018 at 4:36 PM<br/>
<b>From:</b> "Simon Kelley" <simon@thekelleys.org.uk><br/>
<b>To:</b> dnsmasq-discuss@lists.thekelleys.org.uk<br/>
<b>Subject:</b> Re: [Dnsmasq-discuss] No Broadcast Dhcp Offers</div>
<div name="quoted-content">On 26/09/18 17:33, Simon Kelley wrote:<br/>
> On 24/09/18 11:45, gravity70@gmx.com wrote:<br/>
>><br/>
>> Amof, the first and only frames my dongle sends on eth at start, are<br/>
>> some Dhcp DISCOVER, no arps at all.<br/>
>> Please note that such Dhcp DISCOVER frames come with the broadcast bit<br/>
>> NOT set.<br/>
>> Afaik, that meas my dongle is indeed asking the Dhcp server to send a<br/>
>> unicast response, directly to its mac.<br/>
>> Instead QNSMASQ sends those Dhcp OFFER frames to broadcast.<br/>
>> Why it happens so?<br/>
>> <br/>
><br/>
> I can offer two reasons why it might be so. The first is that there's a<br/>
> bug in dnsmasq, which is not unheard-of, but this is old code and a bug<br/>
> has not been observed before. The second is that you're running dnsmasq<br/>
> configured to always send broadcasts, using the --dhcp-broadcast option.<br/>
><br/>
> Check all the dnsmasq configuration files, that's the sort of thing that<br/>
> gets slipped in because is solves someone's problem one time, and "it<br/>
> can't do any harm".<br/>
><br/>
><br/>
<br/>
Looking at the code, it also falls back to broadcast if the "hardware<br/>
address length field is zero or greater than 16, or if the "hardware<br/>
address type" field is zero.<br/>
<br/>
<br/>
Cheers,<br/>
<br/>
Simon.<br/>
<br/>
<br/>
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