On 2019-06-23 03:32, Geert Stappers wrote:
> On 23-06-2019 08:06, A C wrote:
>> I'm having trouble removing leases from my system.  I have a client that
>> accepted a lease in my DHCP range before I remembered to put it in
>> /etc/ethers and /etc/hosts to give it a static lease.
>> I turned off the client, stopped dnsmasq, removed the lease file entry
>> in /var/lib/misc/dnsmasq.leases and then restarted dnsmasq.  Then I
>> restarted the client.  It again found the original lease in my DHCP
>> range instead of picking one from /etc/ethers (in fact it reports "not
>> giving name ap.lan to the DHCP lease of because the name
>> exists in /etc/hosts with address").
>> How can I fully purge the lease and get it to start over?  The client is
>> an embedded device and has no memory of the lease once I power cycle it
>> so somehow dnsmasq is remembering even though the lease file was purged.
> Recently I had simular sympthoms, infact still have them.
> It give me the akward feeling that `readethers` does not work as I expect.
> Because it was the first time that i used Dnsmasq with  /etc/ethers I
> choose to continue with the netboots I have to do.
> Yes, most likely will it bite me another time.
> Meanwhile send your report of (successfull) mapping of IPv4 address on
> MAC address through  /etc/ethers
> Cheers
> Geert Stappers

/etc/ethers works fine for me, I have 50 clients listed in it, no
issues.  My only issue is when I forget to add a client to the list
prior to first putting it online and it acquires a lease from the DHCP
lease pool instead of the IP I want to give it via the combination of
ethers/hosts.  After that I have extreme difficulty purging the lease to
force a new address.

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