Proper use of "allow/deny unknown-clients"?

[John Miller]

On Tue, Aug 20, 2013 at 1:54 PM, John Miller <johnmill at brandeis.edu> wrote:

>
> Hello folks,
>
> We're running into a seemingly odd issue:  when we specify "allow
> unknown-clients" within one of our address pools, known clients are no
> longer to obtain IP addresses.  When we remove the allow/deny rule
> altogether, there's no problem with either known or unknown clients
> connecting.
>
> Can anyone shed some light on the proper use of this parameter, and why
> explicitly specifying an allow rule would block out known clients?
>
> We've got a ton of address pools, so I won't list them all, but the
> relevant pool is:
>
> shared-network GuestWIRELESSNORTH {
>     subnet 129.64.173.0 netmask 255.255.255.0 {
>         option broadcast-address 129.64.173.255;
>         option routers 129.64.173.1;
>         option domain-name-servers 129.64.99.205, 129.64.100.205;
>         option domain-name "guest.brandeis.edu";
>         default-lease-time 3600;
>         max-lease-time 3600;
>         ddns-updates on;
>     }
>     pool {
>           allow unknown-clients;
>           range 129.64.173.10 129.64.173.250;
>           failover peer "brandeis-dhcp";
>     }
> }
>

Realized I forgot our version #:

4.2.4-P2

John
-- 
John Miller
Systems Engineer
Brandeis University
johnmill at brandeis.edu
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