Operation Manual
Vigor2133 Series User’s Guide   
88
Delete – Click it to remove an existed entry. 
Unique Local Address 
(ULA) configuration 
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. 
Current IPv6 Address 
Table 
Display current used IPv6 addresses. 
DNS Server IPv6 Address  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 – Type 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. 
Management  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. 
Other Option(O-bit)  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. 
DHCPv6 Server  Enable Server –Click it to enable DHCPv6 server. DHCPv6 
Server could assign IPv6 address to PC according to the 
Start/End IPv6 address configuration. 










