[Bug]: ipv6 dns servers are not removed

[aanno]

🤔 Is there an existing issue for this?

• I have searched the existing issues

📝 Discription

I try to use dnsChanger-desktop on win11 in conjunction with getflix. For this to work, I want to switch to a (custom, getflix) ipv4 dns server when using getflix.

I observed the following:

• ipv4 dns server is changed as expected
• however, the ipv6 dns server are not touched. This is problematic, as they appear before the ipv4 dns server (you can use ipconfig /all to check).

Because of this, dnsChanger-desktop is only usable in this szenario if you disable ipv6 completely.

I would recomment the following:

• When switching the dns server with dnsChanger-desktop, the program should remove all other dns servers including the ipv6 dns servers.
• This is because, ipv6 dns server could resolve ipv4 ip addresses (and vice versa).
• There are 2 good URL to check your ipv6 state: https://ipv6-test.com/ and http://test-ipv6.com/

💻 In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

Not working example: With ipconfig /all I see the following default config on my PC:

 DNS-Server  . . . . . . . . . . . : fd00::7642:7fff:fedf:9bcb
                                       2001:a61:2462:2201:7642:7fff:beaf:cafe
                                       192.168.10.2

Changing the 192.168.10.2 ipv4 dns server with dnsChanger-desktop does not help as there are 2 ipv6 dns servers asked before.

[dxxxxp]

I don't recommend disabling IPv6 if you have any IOT or VoIP devices as they use some IPv6 protocols to work efficiently