parser.add_argument("-p","--port",metavar="port",default=23170,help="Port that is used for both UDP and TCP communication. Defaults to %(default)d.")
parser.add_argument("-s","--silent",action="store_true",help="Do not answer UDP queries for clients trying to find a key server, only serve key database using TCP.")
parser.add_argument("-v","--verbose",action="count",default=0,help="Increase verbosity. Can be specified multiple times.")
parser.add_argument("filename",metavar="filename",help="Database file to load keys from.")