[Dnsmasq-discuss] Lease comes back after removing

Geert Stappers stappers at hendrikx-itc.nl
Mon Jul 1 10:08:00 BST 2019

On 01-07-2019 10:41, Nicolas Cavallari wrote:

> On 26/06/2019 22:32, Geert Stappers wrote:
>> My (educated??) guess is that lease data is stored in Dbus.
>> My only point to back that up, is `dnsmasq -v` showing  "DBus"
> D-Bus does not store data, it's merely an old-style RPC.
> dnsmasq does not send any D-Bus message when giving out leases, it merely
> provides an API to add/remove them while it is running.
> Without any lease file or lease script, dnsmasq has no way to have a memory of
> the lease.
> maybe it's just the client sending a DHCPREQUEST directly with the old lease,
> and dnsmasq being to eager to give it out ?
A network sniff (  tcpdump / tshark / wireshark )  would be helpfull


Geert Stappers

Willing to analyze a  libpcap network sniff file.

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