title: oracle PL/SQL how to calculate range ip for IPv6 cidr
body: <p>ex.IPv6 address with CIDR:
  2620:0:2d0:200::7/32
  out put
  Start Range: 2620:0:0:0:0:0:0:0
  End Range: 2620:0:ffff:ffff:ffff:ffff:ffff:ffff</p>
  
  <p>how to calculate with PL/SQL ?</p>