which dhcp client should be used?

[Kamaraju Kusumanchi <kk288@cornell.edu>]

I am interested in setting up my machine as a dhcp client. Doing 
apt-cache search for dhcp clients on unstable debian, I get

dhcp-client - DHCP Client
dhcp3-client - DHCP Client
dhcpcd - DHCP client for automatically configuring IPv4 networking

I would like to know which is the preferred one? What are the 
differences between these? Any documentation on these would be nice.

Apparently dhcp-client and dhcp3-client are not compatible with each 
other. Because when installing dhcp3-client, apt-get wants to remove 
dhcp-client.

regards
raju
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