06-23-2011
Are both boxes configured just the same? Renewal should happen in a fraction of lease time, usually less than 50%. Could anything be messing with udp/tcp ports DHCP uses (firewall, other app.)?
Did you check both logs, to see that the failover feature is running right, not fallen over?
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LEARN ABOUT REDHAT
dhclient.leases
dhclient.leases(5) File Formats Manual dhclient.leases(5)
NAME
dhclient.leases - DHCP client lease database
DESCRIPTION
The Internet Software Consortium DHCP client keeps a persistent database of leases that it has acquired that are still valid. The data-
base is a free-form ASCII file containing one valid declaration per lease. If more than one declaration appears for a given lease, the
last one in the file is used. The file is written as a log, so this is not an unusual occurrance.
The format of the lease declarations is described in dhclient.conf(5).
FILES
/var/lib/dhcp/dhclient.leases
SEE ALSO
dhclient(8), dhcp-options(5), dhclient.conf(5), dhcpd(8), dhcpd.conf(5), RFC2132, RFC2131.
AUTHOR
dhclient(8) was written by Ted Lemon under a contract with Vixie Labs. Funding for this project was provided by the Internet Software
Consortium. Information about the Internet Software Consortium can be found at http://www.isc.org.
dhclient.leases(5)