Real IP Address in IPv6 leaked by SoftEther

[climenole]

HI
My ISP give me an access to IPv4 and IPv6 IP protocol.
When I test my IPv6 at http://test-ipv6.com/ (and when I'm connected with SoftEther VPN) the results shows this:
«
Your IPv4 address on the public Internet appears to be 58.70.47.21
(K-OPTICOM K-Opticom Corporation,JP)
Your IPv6 address on the public Internet appears to be 2607:fa48:6e76:d4d0:7c42:e8d:1e5c:2b60
(VIDEOTRON - Videotron Telecom Ltee,CA)
»
As you see, my real IP in IPv6 is leaked by the VPN.
Question: is there a setup or parameter of SoftEther to prevent this real IP leak?
Thank you :)

[BoredAus]

I believe it is configurable from within the SoftEther VPN Server Manager software, under users or something.

[climenole]

Ok. Thank you for your answer. I'll check it. :-)

[thisjun]

There no IPv6 gateway in destination broadcast segment.