D-Link DIR-X1860 User Manual page 50

Section 3 - Configuration
Advanced Settings... - Address Autoconfiguration Settings
Enable Automatic
Enable or disable the Automatic IPv6 Address Assignment
IPv6 Address
feature.
Assignment
If Enable DHCP-PD is disabled in the previous LAN IPv6 Address Settings:
Autoconfiguration Select SLAAC+RDNSS, SLAAC+Stateless DHCP, or Stateful
Type DHCPv6.
If you selected SLAAC+RDNSS or SLAAC+Stateless DHCP as the Autoconfiguration Type:
Router Enter the router advertisement lifetime (in minutes).
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Lifetime
If you selected Stateful DHCPv6 as the Autoconfiguration Type:
IPv6 Address Enter the starting IPv6 address for the DHCP server's IPv6
Range (Start) assignment.
IPv6 Address Enter the ending IPv6 address for the DHCP server's IPv6
Range (End) assignment.
IPv6 Address Lifetime Enter the IPv6 address lifetime (in minutes).
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