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Unable to access ipv6 websites


So this is what my network looks like,

ONR (huawei hg8240t5 router cannot be disabled) ->  c921-4p -> switches etc. etc.'

If I connect directly to my ONR and try to browse IPv6 websites it works fine, I can even see my ipv6 address.

My ONR is already doing routing, here are my ipv4 and 6 dhcp settings.


DHCP settings ipv4 settings:

LAN Host IP Address:
Subnet Mask:
Start IP Address:
End IP Address:

ipv6 settings:

IPv6 address: fe80::1

Method of Obtaining Prefixes: WAN Agent
Parent Prefix:
Child Prefix Mask: ::/64
MTU: 1472

DNS Source on the LAN Side: DNS Agent

Enable Route Advertisement: Yes
Enable DHCPv6 Server:  Yes
Resource Allocation Mode: Manual
Address/Prefix Assignment Mode: SLAAC
Other Information Assignment Mode: DHCPv6

ULA Mode: Disabled


Here are the settings for my c921-4p, I tried to do the ipv6, so port 4 is connected to my ONR and port 5 is connected to my pc for now. I get an Ipv6 address on my PC, but I am unable to access any ipv6 websites or see my global ipv6 address. Not sure what I am doing wrong here.

I also can't figure out where to add the quad9 dns servers. Any help here would be greatly appreciated! Thanks!!


ip dhcp pool DHCP-POOL
no ip domain lookup
ip domain name
ip name-server
ip name-server
ip cef
ipv6 unicast-routing
ipv6 cef
multilink bundle-name authenticated
interface GigabitEthernet4
 description WAN
 ip address dhcp
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
 ipv6 address dhcp
 ipv6 enable
interface GigabitEthernet5
 description LAN
 ip address
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto
 ipv6 address 2001:DB:AAAA:A::1/64
 ipv6 enable


9 Replies 9

Harold Ritter
Cisco Employee
Cisco Employee