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IPv6 DHCP delegated prefix issue

Ed R

Hello All,

Due to a line change (ASDL to VVDSL)  I got new IP addresses from my ISP. These were and are fixed addresses but I need a DHCP client to get them.

The issue has to do with IPv6, IPv4 is working fine. At the line a Draytek Vigor 130 is installed in bridge mode and VLAN stripping is disabled.

In UTM the WAN side network adapter is set to PPPoE, the box "Static PPPOE IP" is not checked and at the advanced section the correct VLAN is stripped. So far so good. BUT, when I enable IPv6 using the switch in the global section of IPv6 the following is displayed:  Native over WAN (DSL)
Delegated Prefix: 2001:980:xxxx::/48. Seems good except for the IP address. This is my old prefix and not the new one belonging to the new line. This must be an issue in UTM because when I connect a simple hardware router to the Vigor modem I get the right new prefix delegated and IPv6 is working.

The UTM software version is: 9.351-3

Please help me with this issue.

Thanks in advance.

Ed.



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  • 0

    Enable and configure Shell access in WebAdmin at Management > System Settings > Shell Access.
    Connect via SSH to the UTM. Must use Putty, but there are many other programs that can be used.
    Login as loginuser
    Once logged in, type "su -", without the quotes, then hit enter to elevate to root. Use the root password you set, when prompted.

    Now you are root. Each of the following lines is a command, so hit enter after entering each each:
    CC
    ipv6
    prefixes@

    When done, the command is Exit to leave CC and go back to the Bash prompt.

    Be aware that changes made from the backend are unsupported.  If you have a paid licence, making backend changes does void your support.  With the above commands, we are just information gathering (seeing if it shows the old or new prefix) and not changing anything, so you're safe.  :)

    __________________
    ACE v8/SCA v9.3

    ...still have a v5 install disk in a box somewhere.

    http://xkcd.com
    http://www.tedgoff.com/mb
    http://www.projectcartoon.com/cartoon/1
Reply
  • 0

    Enable and configure Shell access in WebAdmin at Management > System Settings > Shell Access.
    Connect via SSH to the UTM. Must use Putty, but there are many other programs that can be used.
    Login as loginuser
    Once logged in, type "su -", without the quotes, then hit enter to elevate to root. Use the root password you set, when prompted.

    Now you are root. Each of the following lines is a command, so hit enter after entering each each:
    CC
    ipv6
    prefixes@

    When done, the command is Exit to leave CC and go back to the Bash prompt.

    Be aware that changes made from the backend are unsupported.  If you have a paid licence, making backend changes does void your support.  With the above commands, we are just information gathering (seeing if it shows the old or new prefix) and not changing anything, so you're safe.  :)

    __________________
    ACE v8/SCA v9.3

    ...still have a v5 install disk in a box somewhere.

    http://xkcd.com
    http://www.tedgoff.com/mb
    http://www.projectcartoon.com/cartoon/1
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