How to check if DHCP Server is running in a network

Tue May 27 06:56:29 UTC 2008

Hi,

 I have a requirement where in I have to check after every 3 minutes whether some dhcp server is enabled/running in the network. Enabling dhcp client after every 3 minutes is a big over head, so I would like to first search/look if any dhcp server running in a network, if so i will enable dhcp client to get IP, else I will once again look for dhcp server after 3 minutes.

Thanx in Advance.
-Raghu.
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