//usage: "[-r|-a] [-f LEASEFILE]"
//usage:#define dumpleases_full_usage "\n\n"
//usage: "Display DHCP leases granted by udhcpd\n"
-//usage: "\nOptions:"
//usage: IF_LONG_OPTS(
//usage: "\n -f,--file=FILE Lease file"
//usage: "\n -r,--remaining Show remaining time"