dhclient removes current IP on interface ignoring valid lease
larry.brown at dimensionnetworks.com
Thu May 12 21:04:55 UTC 2011
>From what I've read I have been under the impression that the dhcpd
server does not respond the dhclient will go through the leases file
looking for a valid lease. I configured the server to give out an
extremely long lease so that these clients can go without hearing from
the server. So I am at a loss as to why dhclient isn't using the lease
in the file and running with that address in the absence of dhcpd.
The leases file is as follows:
option subnet-mask 255.255.0.0;
option time-offset -1800;
option dhcp-lease-time 842224520;
option dhcp-message-type 5;
option dhcp-server-identifier 192.168.3.1;
renew 0 2023/04/16 12:41:48;
rebind 1 2034/09/18 07:10:11;
expire 1 2038/01/18 19:04:36;
The command I'm using to launch dhclient is:
dhclient -v -lf /etc/dhclient/leases -H testhost -timeout 10 -V
testClass -nw ra0
The logs when I start dhclient show the attempts and where it comes to
reading the leases file it shows:
dhclient: No DHCPOFFERS received.
dhclient: Trying recorded lease 192.168.3.2
dhclient: No working leases in persistent database - sleeping.
Is there something I'm doing wrong here? How can I overcome this issue
when the dhcpd server goes away? By design it will be going away as
this is definitely not a static network environment.
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