Two offers in response to one discovery

jeffrey j donovan donovan at
Wed Dec 14 15:33:25 UTC 2011

On Dec 14, 2011, at 10:10 AM, John Miller wrote:

> I do not have all the details just yet, but I want to ask a general question to see how much deeper I need to go.
> We are using Bradford’s Campus Manager, which uses the ISC DHCP server (not sure yet what version) and it is the only DHCP server on the network. What I am seeing in a pcap is the WindowsXP client, after a release/renew, send the discovery and the server responding with 2 offers of 2 different IP addresses. First question is does this seem to be any kind of normal behavior? Second question is what additional information do I need to provide to help resolve this issue?

it depends,.. your client could have a previous lease from another zone or another time. The two will basically argue until the client accepts the next available lease.
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