Philip Gillißen

Dear #AskFedi
I use #WireGuard with my #FritzBox and their myfritz.net domain. It works smoothly but from different wifis, the host name is not resolvable.
Is this a common problem? Any idea how to fix this?

5:03pmWeb
Show threadLord Siegelbewahrer11h ago
@guerda Wahrscheinlich werden in den fremden WLANs die gleichen IP-Adressräume benutzt wie Du zu Hause. Die Fritzens sind alle auf 192.168.178.0/24 eingestellt. Kann man zwar ändern, macht aber so gut wie keiner.
Show threadFrank Heijkamp11h ago

@usi
That is indeed a good point. Conflicting subnets could cause issues.

The 192.168.178.0-192.168.178.255 subnet is the standard for all AVM (Fritz!Box) devices.

Change your own subnet to something else like 192.168.179.0 and see if that solves the problem.
@guerda

Show threadExpertenkommision Cyberunfall10h ago

@alterelefant @usi @guerda

That wont lead to an unresolved address for the vpn endpoint and it would become an issue only after the von was established.

Show threadPhilip Gillißen8h ago

@expertenkommision_cyberunfall @alterelefant @usi I don't think it's the local IP subnets, as wireguard tells me that the host name cannot be resolved.

Also the IP address I got in the current wifi is a 10.x.x.x address

Show threadExpertenkommision Cyberunfall7h ago

@guerda

Is the DNS Server you get restricted in somehow? Can you change to a public DNS server like 1.1.1.1?

@alterelefant @usi

Show threadPhilip Gillißen7h ago
@expertenkommision_cyberunfall I tried to override it via the android default dialogue but it doesn't work unfortunately.
Show threadExpertenkommision Cyberunfall7h ago

@guerda

So it does not work to set it in the android or if you set it the dns settings do not work?

Show threadDasMammut11h ago

@guerda What do you mean by "different wifis" ? Your wireguard client moves between wifis ?

Most wifis use DHCP to provide the addresses of local DNS servers to the clients. So you could try to change the DNS servers manually, e.g. try if 9.9.9.9 works ... 🤔

Show threadPhilip Gillißen8h ago
@rkbw yeah, different wifis the client (my phone) is in. Public and private WiFi spots.