No IPv6 on DSL Broadband Connect (PPPoE DHCPv6-PD), while LAN IPv6 is OK (i-040gw get from PPPoE DHCPv6-PD, and offer SLAAC+DHCP statless+RDNSS)


fierycloud

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Hello:
No IPv6 on DSL Broadband Connect (PPPoE DHCPv6-PD), while LAN IPv6 is OK (i-040gw get 2 prefix (one for CPE use, one for lan use) from PPPoE DHCPv6-PD (Wan1 PPPoE Vlan 4082) (The CPE also has 3 WAN interface. The other 2 are the Wan3 PPPoE pass through Vlan 4082, and Wan2 IPoE Vlan 4081), and offer SLAAC+DHCP statless+RDNSS) From 194 to 282.
The other 2 PCs connect to the same CPE(Alcatel i-040gw) on Window 10 21H1 are OK (Though the PPPoE DHCPv6-PD IPv6 address have a static suffix, only prefix changes on every Broadband Dial up).
But the PC which is tricked (Bypass TPM and Secure Boot) to install the Windows 11 has no default IPv6 gateway, no IPv6 dns, no IPv6 global address (Link-local one only). (IPv4 is OK PPPoE and LAN on 3 PCs) The detail window of the Broadband connect shows the server IPv6 address which should be the default gateway. (It's just the same as the PPPOE WAN default gateway in the CPE. So the PPPOE router advertisement should work, but the PC doesn't set it as the default gateway.)

The DHCPv6 client log shows that the M flag changes or something in the LAN interface just as while the PC was on windows 10, and there is a little on the ppp interface.
Or there are RA from the CPE(From PPPoE) to LAN and the one from Windows PPPoE interact with each other? How could I make them apart?
If the problem caused by the vlan tag needed by the ISP? It seems to be a old problem from windows 7 according to some sites. The Windows listen to tagged and untagged packets.
(Tried intel proset 26.6 to create vlan id (4082 for PPPoE) which are set on the CPE, but only the untagged one is OK, the virtual adapters which have vlan have no global ipv4 nor global ipv6.)
The windows 11 seems to block the ICMPv6 NS?

Does Windows 11 have an familiar problem just as the Windows 1607? did?
Tried closing the system firewall to make sure the DHCPv6 and router advertisement not blocked, but no difference.


It seems to also be the familiar problem in the Windows 10 1809 17763 before the .402 patch.
"Addresses an issue that prevents applications and callers from connecting to destination endpoints when they use network interfaces that don’t have a default gateway. This issue affects the following:
Internet access fails on devices with DSL modems and PPPoE dial-up Internet connections (commonly used with DSL modems).
Modern and Microsoft Store apps behave as if there is no Internet access on devices with DSL modems. "
But tried to open the ICMPv6 and no helps.

By the way, trying to used the PPPOE IPV4 and LAN IPv6 at the same time, while just unchecking disable the using remote gateway in the IPv6 in the PPPOE Broadband adapter. And it's really strange that the ipv6-test site show there are no icmpv6 filter (Score 20) while using the method.

Thanks
 
Windows Build/Version
22000.493
Last edited:

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sparefly

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Interesting though, I'm facing the same problem too when trying to connect using a PPPoE connection on a freshly upgraded Windows 11 machine (no bypass), only got IPv4 but no IPv6 address except for a link local one. My other laptop which is still running on Windows 10 (21H1) works fine as well as the CPE and routers that used a direct PPPoE connection. All of them got public IPv6 without a problem so I doubt this is problem on the ISP's side. I'm staring to think if any network-related OS settings could have changed since the upgrade.
 

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HRPuffnstuff

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I recently discovered that I'm having the same problem with my W11 machines while other devices have no problem obtaining one on the same network.
 

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    225Mbps cable primary, 6Mbps secondary vdsl
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    Chrome primary, FF-Edge-IE secondary
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    McAfee Endpoint Security
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    I sit on a Secret Lab Titan XL 2020 chair.😍
  • Operating System
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    2021 HP Omen
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    AMD Ryzen 7 5800H
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    factory
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    16gb ddr 3200
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Bree

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I'm no seeing any problems. This is my System One, upgraded to 11 from 10.


IPv6 test.jpg
 

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    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.
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    Dell Lattitude E4310
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    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

HRPuffnstuff

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I'm fairly certain that I've figured out what's wrong with my pc's and its called McAfee Endpoint Security (government edition) which requires an IPv4 connection. Even my W10 laptop has dropped the IPv6 connection just the same way and the only common thing between them all is the security software.

Edit: I uninstalled the firewall module and IPv6 was restored on my W10 laptop. Now I need to find some new security software and I will remove it from the rest of my machines. I was running it because I do government work on them but I'm not going to allow it to kill my IPv6 connection.
 
Last edited:

My Computers

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    Windows 11 Pro
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    PC/Desktop
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    Self Built
    CPU
    AMD Ryzen 9 5950X
    Motherboard
    Gigabyte X570 Aorus Master
    Memory
    32gb G.Skill Trident Z Neo 3600
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    XFX Speedster MERC319 RX 6900 XT Black
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    EVGA Nu Audio
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    Benq EX3415R
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    3440X1440
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    Samsung 970 Pro, Samsung 850 Pro, Crucial MX500, WD Black SN700, WD Black 8tb HD
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    EVGA Supernova G2 1300w
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    Cooler Master HAF 932
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    EVGA AIO 360, Antec 120mm ARGB x 8
    Keyboard
    Razer Huntsman Elite V1
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    Corsair Dark Core Pro SE on an Asus ROG Balteus Qi pad
    Internet Speed
    225Mbps cable primary, 6Mbps secondary vdsl
    Browser
    Chrome primary, FF-Edge-IE secondary
    Antivirus
    McAfee Endpoint Security
    Other Info
    I sit on a Secret Lab Titan XL 2020 chair.😍
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    2021 HP Omen
    CPU
    AMD Ryzen 7 5800H
    Motherboard
    factory
    Memory
    16gb ddr 3200
    Graphics card(s)
    Nvidia RTX 3060 Mobile
    Sound Card
    onboard B&O
    Monitor(s) Displays
    15.6" 144hz IPS
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    1920x1080
    Hard Drives
    Hynix 512gb nvme ssd, WD Black SN850 2TB nvme ssd
    PSU
    factory
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    factory
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    factory
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    touchpad and Logitech wireless mouse
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    4 zone rgb
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JMedlock83

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I'm fairly certain that I've figured out what's wrong with my pc's and its called McAfee Endpoint Security (government edition) which requires an IPv4 connection. Even my W10 laptop has dropped the IPv6 connection just the same way and the only common thing between them all is the security software.

Edit: I uninstalled the firewall module and IPv6 was restored on my W10 laptop. Now I need to find some new security software and I will remove it from the rest of my machines. I was running it because I do government work on them but I'm not going to allow it to kill my IPv6 connection.
Yeah that makes sense. I don't use McAfee or anything, but they cause a lot of problems with internet connections, websites, etc.
 

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HRPuffnstuff

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I even tried modifying the firewall rules and it still wouldn't allow a connection until I disabled it on my W11 pc's.
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    AMD Ryzen 9 5950X
    Motherboard
    Gigabyte X570 Aorus Master
    Memory
    32gb G.Skill Trident Z Neo 3600
    Graphics Card(s)
    XFX Speedster MERC319 RX 6900 XT Black
    Sound Card
    EVGA Nu Audio
    Monitor(s) Displays
    Benq EX3415R
    Screen Resolution
    3440X1440
    Hard Drives
    Samsung 970 Pro, Samsung 850 Pro, Crucial MX500, WD Black SN700, WD Black 8tb HD
    PSU
    EVGA Supernova G2 1300w
    Case
    Cooler Master HAF 932
    Cooling
    EVGA AIO 360, Antec 120mm ARGB x 8
    Keyboard
    Razer Huntsman Elite V1
    Mouse
    Corsair Dark Core Pro SE on an Asus ROG Balteus Qi pad
    Internet Speed
    225Mbps cable primary, 6Mbps secondary vdsl
    Browser
    Chrome primary, FF-Edge-IE secondary
    Antivirus
    McAfee Endpoint Security
    Other Info
    I sit on a Secret Lab Titan XL 2020 chair.😍
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    2021 HP Omen
    CPU
    AMD Ryzen 7 5800H
    Motherboard
    factory
    Memory
    16gb ddr 3200
    Graphics card(s)
    Nvidia RTX 3060 Mobile
    Sound Card
    onboard B&O
    Monitor(s) Displays
    15.6" 144hz IPS
    Screen Resolution
    1920x1080
    Hard Drives
    Hynix 512gb nvme ssd, WD Black SN850 2TB nvme ssd
    PSU
    factory
    Case
    factory
    Cooling
    factory
    Mouse
    touchpad and Logitech wireless mouse
    Keyboard
    4 zone rgb
    Internet Speed
    WiFi 6, 1gb ethernet
    Browser
    Chrome primary, FF-IE and Edge secondary
    Antivirus
    McAfee Endpoint Security
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