[Dnsmasq-discuss] How can I get dnsmasq to ignore a client's request for an IP it received on an earlier lease?

[bad.cow5843 at fastmail.com]

On Sun, Apr 20, 2025, at 1:27 PM, Geert Stappers wrote:
> On Sun, Apr 20, 2025 at 12:30:21PM +0100, bad.cow5843 at fastmail.com wrote:
> > I don't know why this happened, sorry!
> 
> Yeah, I also would the like to know how it happened.
> 
The thing that confused me was that the client machine was running NetworkManager but it also had dhclient installed, and the first time I tried to drop the lease I used dhclient -r and there was no message, but in fact the DHCP requests were being sent by NetworkManager. So I deleted a file like /var/lib/NetworkManager/internal-cb16f4d9-1bdd-3d64-9259-597efaac2e42-eth0.lease on the client and restarted NetworkManager and that's where things got better, but by then I had also changed the dnsmasq configuration so the dhcp-host= lines preceded the dhcp-range= and then dnsmasq ignores them AFAICT. Maybe it would be good to mention in the man page that dhcp-host specifications are ignored unless they're preceeded by a dhcp-range specification, it that's actually true.
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