[Dnsmasq-discuss] ARP ignores DHCP ACKs !

Jim Alles kb3tbx at gmail.com
Tue Dec 24 18:16:10 GMT 2013

This may have nothing to do with your issue, but there seems to be
something goofy with Apple. An IOS client seems to have to try a
second time to get its IP address on my BYOD network. My guess it is a
time-out issue.

I have not tried --no-ping on dnsmasq.

Jim A.

On Tue, Dec 24, 2013 at 9:55 AM, Matthias Andree <matthias.andree at gmx.de> wrote:
> Am 24.12.2013 13:35, schrieb Nikita N.:
>> Hi :) Im having a strange issue here with DHCP/ARP I cant solve..
>> DHCP works good, it receives a REQ from client MAC asking the preferred
>> ip, e.g., and DHCP answers correctly ACK..
>> But after that, my client keeps asking the following ARP requests to
>> broadcast: "Who has Tell" .. it expects the answer
>> like " is at XX.XX.XX.XX.XX", where XX is the client MAC..
>> but it never comes :(
> Perhaps it is running duplicate address detection to make sure nobody is
> using the address, before it grabs it?  Or the DHCP responses do not
> make it for the client, or the client drops them on the floor.
>> It looks like dnsmasq does NOT inform the system ARP about the client ip
>> it just ACKed, resulting always in connection error/absent ..
> Nor should it.
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