[SOLVED] dnsmasq force release/renew of dhcp clients, how?

srinivascoolguy · 03-08-2012, 11:49 PM

Requirement:
I want to force release/renew of dhcp clients(linux) from dnsmasq server. Is there any way to do this.

i would be thankful for suggestions/solutions

SKODA

allend · 03-09-2012, 12:31 AM

The brutal approach is to stop dnsmasq on the server, then remove the leases you want released/renewed from the dnsmasq.leases file. Restart dnsmasq on the server.
When clients reconnect they will get updated leases as configured in dnsmasq.conf.

srinivascoolguy · 03-09-2012, 03:09 AM

Thanks allend,
My requirement is dnsmasq should force the clients to request for IP.

Additional Info:
I have a router connected to LINUX PC and got x.x.x.230 IP.
I chabged the DHCPPool range in router, start is x.x.x.2 and end is x.x.x.100.
In this case i wanted to renew the LINUX box IP automatically(with out release/renew in LINUX box manually).

allend · 03-09-2012, 05:51 AM

Que?
The client has requested and been granted a lease with a timeout. It will not seek to renew the lease until the timeout expires or it is forced to renegotiate the lease.

srinivascoolguy · 03-09-2012, 06:19 AM

Thank you very much allend...