[Dnsmasq-discuss] dynamic and fixed leases problem

[Administrator]

Hi, I'm using IPCop which has dnsmasq providing the dns caching and dhcp
service.  I have a problem with fixed leases.

 

Some of the devices attached remember their lease assignment when powered
off, and re-request it on startup.  This causes a problem when attaching new
devices which should have fixed leases to the network.  Basically, the
easiest sequence (with IPCop) is to attach the device then assign the device
a fixed lease when it has been recognised.  Devices which re-request the
dynamic lease they were originally given are assigned  the old lease even
though there is a fixed lease with a different address defined for that
device.  On some devices even power-off + power-on doesn't get it to forget
the previous lease.

 

This is, to my mind, and error.  If a device has a fixed lease defined, a
request for a (dynamic) lease with a different address should be refused.

 

Is there an error in the configuration with IPCop, or is this a "feature" of
dnsmasq?  Is the behaviour there for a reason or unintended?

 

IPCop uses version dnsmasq 2.45.

 

Thanks for any comments or advice,

David

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