Can't connect GL-SFT1200 to WireGuard-Client

Routers VPN, DNS, Leaks
21

Thanks for your patience. Hope this helps?

CleanShot 2024-03-01 at 19.51.39
CleanShot 2024-03-01 at 19.51.39876×691 59.3 KB

22

What are the IPs of …

  • Router Network A
  • GL-SFT1200
  • Office internal
23

Router Network A

CleanShot 2024-03-01 at 20.29.22

24

GL-SFT1200

CleanShot 2024-03-01 at 20.30.21

25

Office

CleanShot 2024-03-01 at 20.31.07

26

We have supported many Fritzbox users.

Can you just contact us via email support at glinet.biz and we will help to check.

27

thank you, did so. hope you can help me solving this.

28

Just an update, the issue is related to ipv6.

The ddns is only resolved as ipv6 only here. This definately will be a problem. Still checking.

29

Maybe it’s dual stack lite? Very common in Germany, for example, with cheap contracts.
Dual stack lite means there is CGNAT on the IPv4 and only IPv6 can have incoming ports.

See: Dual Stack Lite (DS-Lite / DSlite) (Translated by Google)

30

Don’t know how does the Fritzbox ddns work. At least it will resolve as both ipv4 and ipv6, no?

31

No, because in dual stack lite you will have IPv4 tunneled over IPv6.
See my link above.

32

I have the same issue. Was it solved?