Draytek Vigor3910 Series User Manual page 78

Available settings are explained as follows:
Item
Enable IPv6
WAN Primary Interface
Static IPv6 Address
Unique Local Address
(ULA) configuration
DNS Server IPv6 Address
Management
Other Option(O-bit)
DHCPv6 Server
68
Description
Check the box to enable the configuration of LAN 1 IPv6
Setup.
Use the drop down list to specify a WAN interface for IPv6.
IPv6 Address –Type static IPv6 address for LAN.
Prefix Length – Type the fixed value for prefix length.
Add – Click it to add a new entry.
Delete – Click it to remove an existed entry.
Unique Local Addresses (ULAs) are private IPv6 addresses
assigned to LAN clients.
Off - ULA is disabled.
Manually ULA Prefix - LAN clients will be assigned ULAs
generated based on the prefix manually entered.
Auto ULA Prefix - LAN clients will be assigned ULAs using an
automatically-determined prefix.
Primary DNS Sever – Type the IPv6 address for Primary DNS
server.
Secondary DNS Server –Type another IPv6 address for DNS
server if required.
Configures the Managed Address Configuration flag (M-bit) in
Route Advertisements.
Off - No configuration information is sent using Route

Advertisements.
SLAAC(stateless) - M-bit is unset.

DHCPv6(stateful) - M-bit is set, which indicates to LAN

clients that they should acquire all IPv6 configuration
information from a DHCPv6 server. The DHCPv6 server
can either be the one built into the Vigor2860, or a
separate DHCPv6 server.
When selected, the Other Configuration flag is set, which
indicates to LAN clients that IPv6 configuration information
besides LAN IPv6 addresses is available from a DHCPv6
server.
Setting the M-bit (see Management above) has the same
effect as implicitly setting the O-bit, as DHCPv6 supplies all
IPv6 configuration information, including what is indicated as
available when the O-bit is set.
Enable Server –Click it to enable DHCPv6 server. DHCPv6
Vigor3910 Series User's Guide