Duplicated IP's

[Simon Hobson]

Moayad mohammad wrote:

>1-      sometimes the dhcpd service provide CPE with duplicated IP's 
>(Already assigned or reserved to other CPE), so the CPE connect for 
>1-2 seconds then disconnected then try again to connect and get the 
>same duplicated IP then disconnected. To solve this issue I have to 
>add new pool of IP's.

OK, where did the other device get it's IP from ? Do you have static 
assignments which are also in a range statement ? If so then you are 
almost guaranteed to get this double allocation - you as the 
administrator are responsible for not assigning an IP statically to a 
client AND allowing it to be assigned dynamically to another client.

>2-      Also sometime when I do MAC reservation then delete this 
>reservation the CPE try to connect with the same IP till I force it 
>to get another IP through another reservation.

The client can continue using it until the lease expires. Once the 
lease expires then it should start broadcasting DHCP-Requests and 
accept any address it is offered. Does you system offer it another 
address (without you making a new static assignment) ?

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Simon Hobson

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