Android App not setting DNS when allowed IPS not 0.0.0.0/0

[Mauro Santos]

On 07/08/20 05:29, Alexander Skwar wrote:
> hello
> 
> Welcome to the club — that is EXACTLY what I'm talking about in the
> thread "WireGuard macOS App doesn't set system default DNS".
> 
> Are you on macOS as well? Using the WireGuard App or are you using wg-quick?
> 
> Regards,
> 
> Alexander
> 

Hello,

I'm not on macOS, this is a problem with the android app, just like the
subject says ;)

I don't know if wg-quick has the same problem, on my laptop I have
unbound running and I use that. I do not have any dns settings on my
wg-quick config files.

Regards,
Mauro Santos

> Am Do., 6. Aug. 2020 um 16:20 Uhr schrieb Mauro Santos
> <registo.mailling at gmail.com>:
> 
>>
>> Hello,
>>
>> Like the subject says I have found that when I'm not routing all traffic
>> through the vpn then my dns setting seems to be ignored (tested with
>> nsleaktest.com).
>>
>> If I route all traffic through the vpn then it works as expected.
>>
>> home network: 192.168.20.0/24
>>
>> vpn "server" is at 192.168.20.10 and internal vpn address is 10.4.4.1,
>> where I have the dns server running and a few other services accessible
>> only though the vpn.
>>
>> "server" config (with systemd-networkd)
>> wireguard.netdev:
>> [NetDev]
>> Name = wireguard
>> Kind = wireguard
>> Description = WireGuard VPN
>>
>> [WireGuard]
>> ListenPort = 4911
>> PrivateKey = ...
>> #Publickey = ...
>>
>> # Phone
>> [WireGuardPeer]
>> PublicKey = ...
>> AllowedIPs = 10.4.4.3/32
>>
>> wireguard.network
>> [Match]
>> Name = wireguard
>>
>> [Network]
>> Address = 10.4.4.1/24
>>
>> "client" config (android vpn app):
>> [Interface]
>> name: msi
>> public key: ...
>> addresses: 10.4.4.3/32
>> dns servers: 10.4.4.1
>>
>> [Peer]
>> public key: ...
>> allowed ips: 10.4.4.0/24
>> endpoint: 192.168.20.10:4911
>>
>> The problem also persists if I access the vpn from outside my internal
>> network and is "fixed" if I change the allowed ips from 10.4.4.0/24 to
>> 0.0.0.0/0.
>>
>> From what I have searched, other people with similar problems had a
>> configuration problem, but I don't think it is the case here since my
>> dns servers in on the same machine as other services and I can access
>> the other services without problems.
>>
>> Any ideas on what the problem could be? I have checked the log on the
>> android app but none of the messages in the log seems to indicate any
>> problem, should I be looking for some warning/error messages in particular?
>>
>> --
>> Mauro Santos
> 
> 
> 
> --
> 
> 
> 
> Alexander
> --
> =>        Google+ => http://plus.skwar.me         <==
> => Chat (Jabber/Google Talk) => a.skwar at gmail.com <==
>