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Author Topic: IPv6 on VMG8924-B10A with BT  (Read 1343 times)

Windows10User

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IPv6 on VMG8924-B10A with BT
« on: July 04, 2020, 05:57:35 PM »

Hi,

I was wondering what are the settings for IPv6 for the VMG8924-B10A on BT.

Thanks.
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Zen FTTC/VDSL 40/10 - ECI Cab and HG612 modem

highpriest

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Re: IPv6 on VMG8924-B10A with BT
« Reply #1 on: August 19, 2020, 10:54:05 AM »

I was wondering what are the settings for IPv6 for the VMG8924-B10A on BT.

This is a guide from Zen:

https://support.zen.co.uk/kb/Knowledgebase/ZyXEL-VMG8924-Fibre-Optic-VDSL-Broadband-Setup

You should be able to tweak that for BT.
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Zen | Zyxel VMG8324-B10A (with RFC4638 patch) | EdgeRouter PoE | UniFi AP AC Pro + Lite

tubaman

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Re: IPv6 on VMG8924-B10A with BT
« Reply #2 on: August 19, 2020, 11:44:04 AM »

Here are the pertinent settings on my VMG8924 (Dual stack selected in IPV6/IPV4 mode selection above these settings).
I do find a quirk with my unit in that IPV6 drops out following a VDSL resync (hard or soft). To get it back I simply reapply the WAN settings below (without change) and it returns. This effectively performs a PPPoE resync without dropping the VDSL side of things.
Second screenshot is from the Home Networking setup.
 :)
« Last Edit: August 19, 2020, 11:55:33 AM by tubaman »
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

jelv

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Re: IPv6 on VMG8924-B10A with BT
« Reply #3 on: August 19, 2020, 03:25:14 PM »

I'm also having trouble getting IPv6 to work on this router. I have everything configured as your screen shots but in the status the WAN IPv6 IP is blank.
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Broadband and Line rental: Zen Unlimited Fibre 2, Mobile: Vodaphone
Router: Fritz!Box 7530

tubaman

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Re: IPv6 on VMG8924-B10A with BT
« Reply #4 on: August 19, 2020, 04:38:02 PM »

I'm also having trouble getting IPv6 to work on this router. I have everything configured as your screen shots but in the status the WAN IPv6 IP is blank.
The address is blank on my one too but there is an IPV6 uptime and it does work when tested with an online checker.
Here is what I get:
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

jelv

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Re: IPv6 on VMG8924-B10A with BT
« Reply #5 on: August 19, 2020, 04:54:23 PM »

Mine also shows IPv6 uptime, but definitely not working. The router's LAN IP has the correct IPv6 prefix and I can ping the router using it's IPv6 LAN address, but it's not acting as a gateway.

Can you tracert to loopsofzen.uk?
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Broadband and Line rental: Zen Unlimited Fibre 2, Mobile: Vodaphone
Router: Fritz!Box 7530

tubaman

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Re: IPv6 on VMG8924-B10A with BT
« Reply #6 on: August 19, 2020, 06:29:01 PM »

...

Can you tracert to loopsofzen.uk?

Yes and no - it tries but doesn't get there after 30 hops.
 :)
Code: [Select]
tracert loopsofzen.uk

Tracing route to loopsofzen.uk [2001:8b0:0:30::666:102]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  broadband.bt.com [2a00:23c7:ae95:ed00:5a8b:f3ff:fed9:9ce2]
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4     *        *        *     Request timed out.
  5     *        *        *     Request timed out.
  6     *        *        *     Request timed out.
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
  9     *        *        *     Request timed out.
 10     *        *        *     Request timed out.
 11     *        *        *     Request timed out.
 12     *        *        *     Request timed out.
 13     *        *        *     Request timed out.
 14     *        *        *     Request timed out.
 15     *        *        *     Request timed out.
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19     *        *        *     Request timed out.
 20     *        *        *     Request timed out.
 21     *        *        *     Request timed out.
 22     *        *        *     Request timed out.
 23     *        *        *     Request timed out.
 24     *        *        *     Request timed out.
 25     *        *        *     Request timed out.
 26     *        *        *     Request timed out.
 27     *        *        *     Request timed out.
 28     *        *        *     Request timed out.
 29     *        *        *     Request timed out.
 30     *        *        *     Request timed out.

Trace complete.
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

jelv

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Re: IPv6 on VMG8924-B10A with BT
« Reply #7 on: August 19, 2020, 06:39:18 PM »

At least you get past the gateway - I get "Destination net unreachable."
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Broadband and Line rental: Zen Unlimited Fibre 2, Mobile: Vodaphone
Router: Fritz!Box 7530

tubaman

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Re: IPv6 on VMG8924-B10A with BT
« Reply #8 on: August 19, 2020, 07:20:30 PM »

Looks like my issue is a Windows 10 and/or firewall one as it works fine on my Linux machine.
 :)
Code: [Select]
traceroute loopsofzen.uk
traceroute to loopsofzen.uk (2001:8b0:0:30::666:102), 30 hops max, 80 byte packets
 1  broadband.bt.com (2a00:23c7:ae95:ed00:5a8b:f3ff:fed9:9ce2)  1.729 ms  2.196 ms  2.739 ms
 2  * * *
 3  2a00:2302::1103:100:36 (2a00:2302::1103:100:36)  11.616 ms  12.393 ms  12.365 ms
 4  * * *
 5  * * *
 6  2a00:2380:13::d7 (2a00:2380:13::d7)  12.148 ms 2a00:2380:13::d5 (2a00:2380:13::d5)  46.290 ms 2a00:2380:13::a1 (2a00:2380:13::a1)  32.802 ms
 7  2001:7f8:4::50e8:1 (2001:7f8:4::50e8:1)  46.035 ms  37.921 ms  37.062 ms
 8  * * *
 9  a.aimless.thn.aa.net.uk (2001:8b0:0:53::41)  26.839 ms  26.792 ms  26.182 ms
10  a.homeless.mh.aa.net.uk (2001:8b0:0:30::51bb:1e02)  26.706 ms  12.869 ms  12.894 ms
11  loopsofzen.uk (2001:8b0:0:30::666:102)  13.495 ms  14.401 ms  19.347 ms
Logged
BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A