Can't ping via IPv6 at "Deutsche Glasfaser"

sirsalomon
sirsalomon Posts: 7  Freshman Member
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edited April 2021 in Security
Hi there,

sorry about my English, it's not my mother language.

I can't ping via IPv6, here are some Screenshot.

IPv6-Adress from ISP at VLAN-Port:


IPv6-Adress at GE4-Port:


Here the result from Network Tool from the ATP500:


And another result, ping via IPv6-Address and interfaces:


Here the Config-Part for the interface VLAN1 (from ISP):

When I try to use SLAAC, I don't become a IPv6 from my ISP.

Here my DHCP-Setting for the local network:


With this setting, my clients become a IPv6-Adress from the ATP500.

Can anyone help me, that I can use IPv6 at the ATP500?

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  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,379  Zyxel Employee
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    Hi @sirsalomon

    According to this screen shot, it looks VLAN interface did not get IPv6 gateway from ISP.

    What IP address ISP provided to you?

    Please use CLI command to show IPv6 routing status:

    Router# debug system ipv6 route show


    And capture the packets on VLAN interface for few seconds.

    It should have IP detail info in “Router Advertisement” (RA) packets.

  • sirsalomon
    sirsalomon Posts: 7  Freshman Member
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    Thanks for your answer.

    Here is the complete address from VLAN1:


    And here ist the Debug-Report:

  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,379  Zyxel Employee
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    Hi @sirsalomon  

    It looks your VLAN interface did not receive default gateway from ISP device.

    Can you capture the packets on VLAN interface for few mins.

    It should have “Router Advertisement” packets sent from your gateway, and ATP will learn it.


  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,379  Zyxel Employee
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    Hi @sirsalomon  

    Did you enabled “SLAAC” in ge4 interface?

    If yes, please disable it and check if IPv6 connection is worked or not.
  • sirsalomon
    sirsalomon Posts: 7  Freshman Member
    First Comment Fifth Anniversary
    Hi Stanley,

    SLAAC is and must be disable :)

    And, I become a lot of RA, but I think, you mean the blue line:




  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,379  Zyxel Employee
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    edited June 2019

    Hi @sirsalomon

    It looks RA(router advertisement) packets has sent to interface but not learned by ATP.

    I will send you private message for check this issue more details.

  • sirsalomon
    sirsalomon Posts: 7  Freshman Member
    First Comment Fifth Anniversary

    Ok, but the access can guarantee only via TeamViewer...


    I'll wait for a PM from you :)

  • sirsalomon
    sirsalomon Posts: 7  Freshman Member
    First Comment Fifth Anniversary
    https://businessforum.zyxel.com/discussion/comment/8285#Comment_8285

    Thanks, Stanley, it work's. It look like, that the firmware is buggy?

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