Different pools for dynamic and "static" leases

Simon Hobson dhcp1 at thehobsons.co.uk
Wed Mar 21 18:40:42 UTC 2007

Keith Lawson wrote:

>We've setup 2 pools in our subnet declarations. One pool is for 
>dynamic clients and the other is for "static" clients that have host 
>declarations with "fixed-address" options. We added the static pool 
>since our servers are configured in a failover pair.
>subnet netmask {
>    option routers...
>    # dynamic pool
>    pool {
>       options...
>       range;
>    }
>   # static pool
>    pool {
>      options...
>       range;
>Is there a way to stop dynamic hosts from getting addresses out of 
>the static pool?


You MUST NOT have an address which is both in a pool range statement 
and also allocated via a fixed address statement - the server does 
NOT check and will quite happily give out an addresses to a dynamic 
client and later attempt to give the same address to the fixed 
address client.

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