Private Network

I’m setting up a private routing following the online guide.

When starting the discovery service I get this:

Using config file: ./discovery/ttn.yml
  INFO Initializing The Things Network          Auth Servers=map[ttn-account-v2:https://account.thethingsnetwork.org local:file://discovery/server.pub] ComponentID=mynetwork-discovery Description= Discovery Server Address=discover.thethingsnetwork.org:1900 Monitors=map[]
  INFO Initializing Discovery                   Database=localhost:6379/0 HTTP Proxy=0.0.0.0:8080 Server=0.0.0.0:1900
  INFO Starting
  INFO ttn: Got public keys for token validation

the strange thing is Discovery Server Address = discover.thethingsnetwork.org:1900. Why there is a reference to the default discovery server instead of my localhost?