Draytek Vigor2620 LTE Series User Manual page 125

Unique Local Address
(ULA) configuration
Current IPv6 Address
Table
DNS Server IPv6 Address
Management
Other Option(O-bit)
DHCPv6 Server
Vigor2620 Series User's Guide
Prefix Length – Enter 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.
Display current used IPv6 addresses.
Deploy when WAN is up – The RA (router advertisement)
packets will be sent to LAN PC with DNS server information
only when network connection by any one of WAN interfaces
is up.
Enable – The RA (router advertisement) packets will be sent
to LAN PC with DNS server information no matter WAN
connection is up or not.
 Primary DNS Sever – Enter the IPv6 address for Primary
DNS server.
 Secondary DNS Server –Type another IPv6 address for
DNS server if required.
Disable – DNS server will not be used.
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
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