open for renewal requests

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22836 52c4871e-980c-0410-b1e0-e73912ce01f8
allow renewal

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22837 52c4871e-980c-0410-b1e0-e73912ce01f8
only if dhcp is used

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22838 52c4871e-980c-0410-b1e0-e73912ce01f8
final update

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22839 52c4871e-980c-0410-b1e0-e73912ce01f8