[Dnsmasq-discuss] dnsmasq doesn't reply to client requests after dhcp-host changed

[Hoang Nhi Nguyen]

Problem: client xyz requests an address, dnsmasq gives it an IP, say
192.168.1.1. My dnsmasq is configured so that after giving out that address
to the client,  "dhcp-host=192.168.1.1,xyz" is added to the configuration
file. Now if I change that line to a new IP address,
say "dhcp-host=192.168.1.2,xyz", and the client does a "release" and
"renew", the server doesn't reply. Packet capture shows the client
requesting 192.168.1.1 in the DHCP Discover message, and no response from
the server.

My question is, what is the default behaviour when the client requests an IP
different from the one specified for it in dhcp-host? What should I do if I
want dnsmasq to give the client a specific IP next time it requests one?

"dhcp-authoritative" is not set. I don't know if it matters in this case,
just throwing it out there.

My apologies if this question has been asked. (Please do point me to the
thread if it has. I have searched the archive but couldn't find anything.)

Thanks.
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