Technicolor TG582n DNS IPv6

[#1]

Hi,
Have a network with a Windows Server 2008 R2 is the Domain Controller with the Technicolor TG582n being the internet gateway.
I have suddenly had an issue where the client network PC's cannot get network connections properly.
Have traced it to IPv6.
The ipconfig of client Windows 7 PC's show an IPv6 DNS address which matches up with the Technicolor TG582n.
I have my server not giving out IPv6 DNS via DHCP but the router is obviously doing so.
It suddenly happened a couple of days ago.
How do I turn it off.
I have turned off the router being a DNS provider so why is it now giving IPv6 DNS/DHCP?
Thanks

[#2]

Have a look here http://192.168.1.254/cgi/b/is/_pppoa_/dt/?be=0&l0=2&l1=2&name=Internet (login required).
Do a text copy and paste of it here in a post but delete/leave out your username & IP addresses.
IIRC I disabled my IPv6 via the 582n's CL:I. I'll have a look at my notes.

[#3]

Is this what you are looking for?

Internet 

Connection Information
   

Link Status: IPv4 connected

IPv6 disconnected

Uptime: 30 days, 7:39:32

Data Transferred (Sent/Received) [GB/GB]: 8.91 / 51.78


Connection Settings
   

PVC Info (VPI.VCI): -

Type: PPPoA


PPP Settings
   

Username: *****@plusdsl.net

Password: ******************

Connection Mode: Always-On


TCP/IPv4 Settings
   

IPv4 State: Enabled

IPv4 Address: 80.***.90.***/32

IPv4 Default Gateway: 195.166.128.191

Primary DNS: 212.159.6.9

Secondary DNS: 212.159.6.10


TCP/IPv6 Settings
   

IPv6 State: Disabled

Stateless Address Autoconfiguration: Disabled

IPv6 Address: -

IPv6 Default Gateway: -

Local Interface ID: -

Remote Interface ID: -

DNS Server 1: -


Also, here is Home Network settings:

Interface - LocalNetwork 

Interface Information
   

Interface Group: lan


TCP/IPv4 Configuration
   

IPv4 State: Enabled

Auto-IP Enabled: Disabled

Use DHCPv4 Server: Disabled


TCP/IPv6 Configuration
   

IPv6 State: Enabled

Advertising prefix: --

Stateless Address Autoconfiguration: Disabled

Use Stateless DHCPv6 Server: Disabled


IP Addresses

IPv4 Address/Mask
Type

10.0.0.138/24 Static

192.168.10.1/24 Static

192.168.10.9 Content
Sharing

IPv6 Address/Prefix-Length
Type


fe80::9e97:26ff:fe7a:6c0/64 Dynamic

DHCP Pools

DHCPv4 Pool Name
Address Range
Gateway

LAN_private 192.168.1.64 - 192.168.1.253 192.168.1.254

Stateless DHCPv6 Pool Name

LAN6_pool   


So basically, as far as I can see, I have turned off IPv6 DHCP?
Router suddenly started giving IPv6 addresses to clients DHCP thus stopping Group Policy being applied from the Windows 2008 R2 server.
The server has DHCP Ipv4 scope but no scope setup for IPv6.
Just tried to re-enable IPv6 on a client PC interface and it still boots to no Group Policy. If I disable the enable the LAN interface, it then works?
Why, how, when?? 
How do I stop IPv6 from the router?
Thanks again.


 

 

[#4]

Do you have the DHCP server enabled in the Windows Server ?
IF so then don't you need to disable the routers DHCP server.

[#5]

Yes, DHCP role enabled withIPv4 scope on the server.
Only DNS is the server itself.
DHCP is disabled as far as I can tell on the router which it needs to be otherwise it will conflict with the server DHCP.
Have run a few CLI commands to query the DHCP of the router and it says no DHCP. Can't remember the exact command but found a Thomson pdf with commands.
Why then is it giving out IPv6 addresses to clients?

[#6]

Try disconnecting and reconnecting until you are not on a bng gateway.

[#7]

Ok, thanks.
Have just checked and I am on: gateway ptn-ag02

[#8]

Have you got the right manual for your firmware version and which have you got?
Now my page above is identical except -
On the Home Network Interfaces
TCP/IPv6 Configuration
IPv6 State:    Enabled
Advertising prefix: --
Stateless Address Autoconfiguration: Disabled
Use Stateless DHCPv6 Server: Disabled
whereas I have
IPv6 State: Disabled

IPv6 Address/Prefix-Length    Type
fe80::9e97:26ff:fe7a:6c0/64 Dynamic
whereas I have
No IP address configured on this interface.
When I looked in my notes, I couldn't find any CLI for the above settings, so some changes may have been made in the GUI, BUT the only other differences are the LAN IP address ranges which has reminded me of something, so I'm going to look again.
I also found an old post of mine where I said "IPv6 disabled WAN side is the default"

[#9]

Ok, I have restarted router a few times. Same configuration.
Still showing Home Network as:
TCP/IPv6 Configuration
IPv6 State: Enabled
and an IPv6 address.
Must be able to turn that off somewhere?
Cheers

[#10]

The router firmware is: Software Release: 10.2.5.2

[#11]

Try doing what Jelv did here - http://community.plus.net/forum/index.php/topic,121285.0.html
But rather than enabled, change it to disabled:

Quote

ppp ifconfig ipv6 disabled intf Internet

[#12]

Thanks for finding that AndyH.
Have tried it but says 'Interface filter(s) not matched.'
Looked again and IPv6 is showing as disabled in the: Internet Services > Internet TCP/IPv6 Settings IPv6 State: Disabled
It's in the Home Network > Interfaces > LocalNetwork  that I need to turn IPv6 off I think as that's where is says: TCP/IPv6 Configuration IPv6 State: Enabled

[#13]

Try the following telnet commands to disable IPv6.

Quote

dhcp serverv6 config state=disabled ip ifconfig intf=LocalNetwork ipv6=disabled saveall

Alternatively use backup and restore. Save a backup of the routers config file and edit it with notepad making the following changes marked in red. Then use restore to save the modified config file.

Quote

[ dhcsv6.ini ] debug traceconfig state=disabled pool add name=LAN6_pool pool config name=LAN6_pool state=disabled intf=LocalNetwork localdns=enabled [ ip.ini ] ifadd intf=LocalNetwork dest=bridge ifadd intf=Multicast dest=ethport4 ifconfig intf=loop mtu=4096 linksensing=disabled group=local symmetric=enabled curhoplimit=64 dadtransmits=0 retranstimer=1000 acceptra=disabled autoconf=disabled ifconfig intf=Internet mtu=1500 linksensing=enabled group=wan acceptredir=disabled rpfilter=disabled curhoplimit=64 dadtransmits=1 retranstimer=1000 acceptra=enabled autoconf=disabled ifconfig intf=LocalNetwork mtu=1500 linksensing=disabled group=lan acceptredir=disabled rpfilter=enabled ipv4=enabled primary=enabled ipv6=disabled curhoplimit=64 dadtransmits=1 retranstimer=1000 basereachabletime=30000 gctimer=600000 acceptra=disabled autoconf=disabled

[#14]

Thanks npr, that's done it! 
Where did you find the CLI commands?

[#15]

npr is the font of all knowledge for the TG582: http://npr.me.uk/