DHCP question: dhclient won't request same IP.

Dave Johnson dave-gnhlug at davej.org
Wed Jan 31 22:51:07 EST 2007


Dave Johnson writes:
> 
> It appears the client is sending a DHCPDISCOVER while still using the
> old address (the server can ping it).
> 
> For a renewal of an existing lease the client should first send a
> DHCPREQUEST instead of DHCPDISCOVER.  Only if the DHCPREQUEST is
> ignored/lost should it send a DHCPDISCOVER in an attempt to find a new
> lease.
> 
> The server is doing the right thing in this case.  If the server
> recieved a DHCPREQUEST first it would extend the existing lease.
> 
> The logs from the client computer may reveal the requests and if it is
> trying a REQUEST first with no response.

Also, one thing to note. I've found good luck with 'dhcp3-client'
instead of the older v2 versions or other clients such as pump.  Under
debian, you can:

apt-get install dhcp3-client


-- 
Dave



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