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WAN IPv6 Prefix Delegation doesn't work
I bought recently a new FVS328Gv2 as replacment for an older D-Link DIR-825. The FVS318Gv2 is connected to an AVM Fritz!Box 6490 which is the internet access router of my provider. The Fritz!Box 6490...
Hi DaneA, dear community,
here some more update acc. to IPv6 prefix delegation on WAN side. The last problem I was struggeling around was, that I used a VLAN configuration on my FVS318Gv2 which was not compatible with IPv6 prefix delegation. I had some more disscusions with the help of NETGEAR support and figured out that delegated IPv6 prefixes are alway attached to VLAN1 the default VLAN.
I got the following advise from the support:
So if you are using prefix delegation, you accept that the subnet associated with the particoular hosts is always the same (and it should not be if you are using different VLANs). In our case, RADVD (Router Advertisement Daemon) is making the choice for us and it picks automatically VLAN 1 when he try to assign an IPv6 address to the clients. This done according to the standards that define RADVD.
So folks that all for this topic.
Which you you a pleasant new year.
Regards
Andreas
Ups found I a typo in my post.
This post relates to the Netgear FVS318Gv2 not FVS328Gv2 as I wrote in the text.
Sorry for that.
Hi AndiRauchhaus,
Were you able to access the article I've shared? Hope it helped.
Regards,
DaneA
NETGEAR Community Team
Yes I was able to access your document. And I tried to follow precisly the the steps descibed.
1. Frist I did a factory reset of my FVS318Gv2 to remove my old setup.
2. Tested the IPv6 connectivity directly when connected on my Fritzbox 6490.
Result was all Ok with a score of 10/10 point. So all is well on my Fritzbox side.
3. Activated IPv4/IPv6 mode on the FVS318Gv2.
Result was a reboot as expected. So this step was OK.
4. Selected DHVPv6 on WAN settings with stateless autoconfiguration and prefix delegation as described by the document.
I got the same result as descibed above in my post. The WAN connection stayed on 'connecting ...'
FVS318Gv2> show net wan wan ipv6 status Broadband
IPv6 WAN1 Status
________________
IPv6 Connection Type: Dynamic IPv6 (DHCP)
IPv6 Connection State: Connecting...
IPv6 Address: <IPv6 Prefix of ISP>:b27f:b9ff:fecc:9f81/64
Default IPv6 Gateway: fe80::<IPv6 interface ID of Fritz!Box>
Primary DNS Server:
Secondary DNS Server:**** IPv6 prefix delegation stil does not work ****
I don't know what's wrong. Try now to us the FVS318Gv2 in IPv4 mode only.
Are there any more experiences in connecting a FVS318Gv2 to a Fritzbox out there?
Here is my setup:
ISP <----> Fritzbox 6490 <----> FVS318Gv2
This line works fine on IPv4.
IPv6 is fine on the Fritzbox 6490 side but FVS318Gv2 does not get a IPv6 prefix delegation. Of course the Fritzbox 6490 is setup correctly as described by AVM to provide a second router. This worked well with my older DIR-825.
Hi AndiRauchhaus,
Kindly try this. Access the web-GUI of the FVS318Gv2 then go to Network Configuration > WAN Settings > 6 to 4 Tunneling. Check the box that says Enable Automatic Tunneling then click Apply.
Let us know the result.
Regards,
DaneA
NETGEAR Community TeamHi DaneA,
I did the proposed test right a minute ago. Here is my report:
1. Enable 'IPv4/IPv6 mode' on WAN settings - WAN mode
Causes FVS318Gv2 to reboot due to IP mode change as expected.
2. Enable 'Enable Automatic Tunneling' on WAN settings - 6 to 4 Tunneling
FVS318Gv2 responds 'Operation succeeded'.
3. Enable DHCPv6, Stateless Address Auto Configuration, Prefix Delegation on WAN IPv6 settings - Broadband ISP Settings
I got the same result as descibed above in my post. The WAN connection stayed on 'connecting ...'
FVS318Gv2> show net wan wan ipv6 status Broadband
IPv6 WAN1 Status
________________
IPv6 Connection Type: Dynamic IPv6 (DHCP)
IPv6 Connection State: Connecting...
IPv6 Address: <IPv6 Prefix of ISP>:b27f:b9ff:fecc:9f81/64
Default IPv6 Gateway: fe80::<IPv6 interface ID of Fritz!Box>
Primary DNS Server:
Secondary DNS Server:
And I do not get an IPv6 address on the LAN side. Which I should due to the
IPv6 automatic address configuration.
FVS318Gv2> show net lan ipv6 setup
IPv6 LAN Configuration
______________________
LAN TCP/IP Setup:
IPv6 Address: fc00::1
IPv6 Prefix Length: 64
DHCPv6:
DHCP Status: Disable DHCPv6 Server
DHCP Mode: Stateless
Prefix Delegation: Disable
Domain Name: netgear.com
Server Preference: 255
DNS Servers: Use DNS Proxy
Lease/Rebind Time: 86400
List of IPv6 Address Pools
__________________________
List of Prefixes for Prefix Delegation
______________________________________
FVS318Gv2>
4. Enabled RADVD on LAN setup with default settings.
But I do not see any delegated prefix on the RADVD web GUI.
So beyond the '6 to 4 Tunneling' I made the same steps as described in the document 'How to Configure Dynamic IPv6 Connection on a PROSAFE Firewall'. The whole test took about 30 minutes and I did never get an IPv6 prefix shown on the RADVD web page. The broadband connection stayed all the time on 'Connecting...'. But as far as I understood I should get IPv6 prefix delegated from my Fritzbox to my FVS318Gv2 after these steps.
Conclusion --> **** IPv6 prefix delegation still does not work ****
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