Offered but not ACKed IP in ARP table

Phil Mayers p.mayers at
Tue Oct 7 07:23:50 UTC 2014

On 7 October 2014 01:03:27 BST, Lily <truelily43 at> wrote:
>We have two dhcp servers(with different pools of course) in same vlan,
>client get offers from both servers with different IPs.
>for example  server 1 will offer and server 2 will offer
> to
>same client, client choose, but sometimes appear in
>ARP table with client MAC(for two minutes, which is the time offered
>is reserved).
>I wonder if this is right, shouldn't client still use  instead
>using offered but not ACKed lease?

We see this routinely. I'm assuming it's an artifact of the helper process on our (Cisco) routers, rather than client misbehaviour
Sent from my mobile device, please excuse brevity and typos

More information about the dhcp-users mailing list