Two offers in response to one discovery
dhcp1 at thehobsons.co.uk
Wed Dec 14 15:51:03 UTC 2011
John Miller wrote:
>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
This can happen is there are two paths for a request to reach the
server - eg two routers on redundant paths both acting as relays.
However, in that case, you should see the same IP address in the two
Alternatively, someone has setup a rogue server.
You would want to examine the contents of the offer packets, and see
what the Server ID field holds.
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