@Jonturk 

Most likely the Homeshield if you're using it and have the router tied to a TP-Link account.

  @Joseph-TP completely ignores the actually question/request.  The tp-link router is emplying DNS hijacking even when trying to avoid it.

Requester (and me) want to disable this blanet security risk. It also hurts the performance on doing this.

This can be tested best with your tplinkwifi.net resolves to what ever the it thinks router is, even if you have employed steps to avoid it or even internally assign tplinkwifi.net.  

Also, the router leaves port 53 open on the outside.  This is a No-No. (I've done a work around forwarding 53 externally to an internal BS ip)

So We need 3 things

1. Disable DNS Hijacking/DNS proxy (what original poster is requesting)

2. Disable DNS on outside interface (dont know how the internet as a whole isn't screaming about this esay way to DOS a user that you left open)

3. Way to completely disable DNS being hosted on device.