dhcp_lease_time is not used in dnsmasq call

[halfss]

when i use DHCPflat mode,the instance to get ip in fews times
in the log of nova-network.log like this:

2011-11-23 13:33:30,840 DEBUG nova.network.manager [8d6b0be9-1ae7-4f69-a10c-c4d6a42ebc55 None None] Leased IP |10.0.0.22| from (pid=12204)
lease_fixed_ip /usr/lib/python2.7/dist-packages/nova/network/manager.py:642

2011-11-23 13:34:14,850 DEBUG nova.network.manager [cf1929d3-03c5-427f-b41b-beef610b0db2 None None] Leased IP |10.0.0.22| from (pid=12204)

lease_fixed_ip /usr/lib/python2.7/dist-packages/nova/network/manager.py:642

when i change the flag "dhcp_lease_time" in the "network/linux_net.py "
 58 flags.DEFINE_integer('dhcp_lease_time', 12000000,
 59 'Lifetime of a DHCP lease')

it's still 120s
dnsmasq --strict-order --bind-interfaces --conf-file= --domain=novalocal --pid-file=/var/lib/nova/networks/nova-br1.pid --listen-

address=10.0.0.3 --except-interface=lo --dhcp-range=10.0.0.2,static,120s --dhcp-lease-max=512 --dhcp-

hostsfile=/var/lib/nova/networks/nova-br1.conf --dhcp-script=/usr/bin/nova-dhcpbridge --leasefile-ro

so i change this(in network/linux_net.py ):
- 626 '--dhcp-range=%s,static,120s' % network_ref['dhcp_start'],
+626 '--dhcp-range=%s,static,%d' % (network_ref['dhcp_start'],FLAGS.dhcp_lease_time),

it's work well

dnsmasq --strict-order --bind-interfaces --conf-file= --domain=novalocal --pid-file=/var/lib/nova/networks/nova-br10.pid --listen-address=192.168.0.6 --except-interface=lo --dhcp-range=192.168.0.2,static,12000000 --dhcp-lease-max=256 --dhcp-hostsfile=/var/lib/nova/networks/nova-br10.conf --dhcp-script=/usr/bin/nova-dhcpbridge --leasefile-ro
root 12620 0.0 0.0 7932 1056 pts/2 S+ 00:43 0:00 grep --color=auto dns

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/2681

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/2681
Committed: http://github.com/openstack/nova/commit/3290b24a0d992e258d38e290ba36cbf2f547fa3c
Submitter: Jenkins
Branch: master

commit 3290b24a0d992e258d38e290ba36cbf2f547fa3c
Author: Joe Gordon <email address hidden>
Date: Thu Dec 29 14:33:59 2011 -0800

    use dhcp_lease_time for dnsmasq. Fix bug 894218

    Change-Id: Ib5e1a847e2b422ca03a6a08cf5cc2699c2b4b8cd