<node name="address"> <children> <leafNode name="autoconf"> <properties> <help>Enable acquisition of IPv6 address using stateless autoconfig (SLAAC)</help> <valueless/> </properties> </leafNode> <leafNode name="eui64"> <properties> <help>ssign IPv6 address using EUI-64 based on MAC address</help> <valueHelp> <format>ipv6net</format> <description>IPv6 address and prefix length</description> </valueHelp> <constraint> <validator name="ipv6-prefix"/> </constraint> </properties> </leafNode> </children> </node>