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DHCP IPv6 not Working!!

Hi all, I am trying to set up a DHCP Ipv6 server, but when I connect my machine to the network My machine is not getting and IPv6 address neither the DNS address. If I statically configure an Ipv6 address on my machine I am able to ping my default Gateway “2800:410:3082:1::1” and go to the Internet it works fine with static, but I want it the Ipv6 address be assigned by DHCP.

Can anyone please assist me, thanks advance for your help.. This is the configuration I am Using,,


Router#sho ver

Cisco IOS Software, 3800 Software (C3845-ADVIPSERVICESK9-M), Version 12.4(11)XW10, RELEASE SOFTWARE (fc2)

Technical Support:

Copyright (c) 1986-2009 by Cisco Systems, Inc.

Compiled Thu 05-Feb-09 22:10 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T10, RELEASE SOFTWARE (fc1)

Router uptime is 6 minutes

System returned to ROM by reload at 18:08:45 UTC Fri Jun 24 2011

System image file is "flash:c3845-advipservicesk9-mz.124-11.XW10.bin"

If you require further assistance please contact us by sending email to

Cisco 3845 (revision 1.0) with 222208K/39936K bytes of memory.

Processor board ID FTX1302A34G

2 Gigabit Ethernet interfaces

1 Virtual Private Network (VPN) Module

DRAM configuration is 64 bits wide with parity enabled.

479K bytes of NVRAM.

62720K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102


ipv6 dhcp pool IPV6_1

prefix-delegation pool pool1 lifetime 1800 600

dns-server 2001:470:20::2



ipv6 dhcp pool IPV6_2

prefix-delegation pool pool2 lifetime 1800 600

dns-server 2001:470:20::2



multilink bundle-name authenticated


voice-card 0

no dspfarm



log config




interface GigabitEthernet0/0

description --To 7609 MPE1_ON PORT 3/3--

no ip address

duplex full

speed auto

media-type sfp

ipv6 address FDDF:1:1:1000::/64 eui-64

ipv6 enable


interface GigabitEthernet0/1

no ip address

duplex full

speed auto

media-type rj45

ipv6 enable


interface GigabitEthernet0/1.998

description **To Customers**

encapsulation dot1Q 998

pppoe enable group global

ipv6 address 2800:410:3082:1::1/64

ipv6 enable

ipv6 nd managed-config-flag

ipv6 nd other-config-flag

ipv6 dhcp server IPV6_1



ip http server

no ip http secure-server


ipv6 route ::/0 FDDF:1:1:1000:C671:FEFF:FE02:8D40

ipv6 local pool pool1 2800:410:3082:1::/64 64

ipv6 local pool pool2 2800:410:3082:2::/64 64

Cisco Employee

Hi Danny,

You seems to have only nebaled PD under DHCP pool on the server. Per my understanding, this will only provide PD prefix requested by Client and not the address as such.

Can you add "address prefix /" as below,

ipv6 dhcp pool IPV6_1

prefix-delegation pool pool1 lifetime  1800 600

address prefix 2800:410:3082:1::/64

dns-server 2001:470:20::2






I already tried that, when I go in    Router(config)#ipv6 dhcp pool IPV6_1    I do not have an option to configure the

address prefix 2800:410:3082:1::/64,

This are the option I get under Router(config)#ipv6 dhcp pool IPV6_1

Router(config)#ipv6 dhcp pool IPV6_1


IPv6 DHCP configuration commands:

  default            Set a command to its defaults

  dns-server         DNS servers

  domain-name        Domain name to complete unqualified host names

  exit               Exit from DHCPv6 configuration mode

  import             Import options

  information        Information refresh option

  nis                NIS server options

  nisp               NISP server options

  no                 Negate a command or set its defaults

  prefix-delegation  IPv6 prefix delegation

  sip                SIP server options

  sntp               SNTP server options

I was reading on " ipv6 local pool"  , But I don't know if that option can assign machines IPv6 and Dns addresses automatically by DHCP?????

I tried 2 other IOS that support IPv6 and both of them Including the one I am using dont give me the option to configure "address prefix 2800:410:3082:1::/64" under "ipv6 dhcp pool IPV6_1",

Is thier a differnt way of configuring a DHCP server for IPV6??? Any other suggestions are highly appreciated,

thanks for your help