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IPv6 DHCP delegated prefix issue

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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