Proposed CLI:
set service dhcpv6-server global-parameters cisco-voip width 2 set service dhcpv6-server global-parameters cisco-voip length-width 2 set service dhcpv6-server global-parameters cisco-voip tftp-servers set service dhcpv6-server shared-network-name Lan-v6-02 subnet 2001:db8:23::/64 cisco-voip tftp-server xx:xx:xx