Subject: dhcpd -T doesn't write out new (temp) lease file
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From support ticket 3446.

There seem to be cases where dhcpd -T doesn't catch problems in the lease file that cause dhcpd to not start as a daemon. Per jabber w/Hankins, -T doesn't write a new lease file, whereas dhcpd does when starting as daemon.

Since this means there is a possibility for -T to miss problems that cause dhcpd to not start, I suggest that -T write a new (temporary) lease file so that it exercises the complete code path that dhcpd does when it starts.