Logging will be done only if run as Service.
LogLevels can be set as None, Normal or All
Logging Level has be specified separately for DHCP and DNS
It is advisable to keep logging to Normal, Normal include errors 
and DHCP Lease renewal messages. Normal is defaul logging also.
Log file should be specified at command line.
Log file name should include %Y%m%d, %Y will be replaced
by Current Year, %m by current month and %d by current year.
