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I have been trying to set up a DNS server on my system using Linux and bind. (I'm working with CentOS and Linux on my Windows 7) On my Linux everything seemed to work:I can access my server and ping/nslookup/etc to the requested webpage on my created Linux server.

But on windows I'm unable to ping to my webpage hosted on my Linux server:

Pinq request could not find host mmore.be Please check the name and try again.

When I ask for ipconfig -all I realised that on my local area connection I got 3 DNS servers but I only need to access the 192.168.0.198...

What are these 2a02:1800:100::44:1 and 2a02:1800:100::44:2 doing?

Are they causing that I'm unable to ping to my webpage hosted on my linux?

If yes: can I remove or shut down these 2 DNS servers?

My DNS for local and Virtualbox connection

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What are these 2a02:1800:100::44:1 and 2a02:1800:100::44:2 doing?

They're IPv6 DNS servers.

Are they causing that I'm unable to ping to my webpage hosted on my linux?

Maybe. It's possible that your network prefers IPv6 over IPv4.

If yes: can I remove or shut down these 2 DNS servers?

You can remove them, they're just DNS servers that look weird (IPv6 addresses, not everyone is used to it)

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    They're the default DNS servers for customers of the Belgian ISP Telenet. I have the same DNS servers on my home connection. – Nzall Apr 7 '16 at 13:26

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