[Dnsmasq-discuss] Thanks and question

[Simon Kelley]

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You can think of a dhcp-range statement as supplying two things: a
subnet in which DHCP happens and a range of addresses within that
subnet which can be dynamically allocated to DHCP clients.

It doesn't constrain dhcp-host entries to be within the dynamic range,
only the subnet, so

dhcp-range=192.168.1.100,192.168.1.200,255.255.255
dhcp-host=myhost,192.168.1.80

Is perfectly sensible: unknown hosts go into
192.168.1.100-192.168.1.200 and known hosts go elsewhere where they
can't be interfered with by dynamic allocation, are amenable to
different firewall rules, etc etc.


dhcp-range=192.168.1.0.static,255.255.255.0

Just provides the subnet to enable the relevant dhcp-host entries,
without providing any range for dynamic allocation, so unknown hosts
will fail to get an address.


Cheers,

Simon.




On 08/02/15 03:14, A James Boswell wrote:
> G’day, I only just came across dnsmasq and installed and
> configured it yesterday. It’s great. Thank you.
> 
> My question. What is the reasoning behind dhcp-host static entries 
> being subnets, not start and end ranges? The syntax on the man
> page suggests start and end addresses should work, though the
> description says subnet. Sure enough a range fails —test.
> Fortunately I was close to a /25 boundary anyway, but is there some
> reason it couldn’t work the other way?
> 
> Thanks again - it’s a really well structured, easy to configure 
> solution for small networks. One that’s been sorely missing.
> 
> A. James Boswell james at boswellbunch.com
> 
> 
> 
> 
> _______________________________________________ Dnsmasq-discuss 
> mailing list Dnsmasq-discuss at lists.thekelleys.org.uk 
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 
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