[Freeipa-users] What is the use of /etc/krb5.conf?

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I thought /etc/krb5.conf controls which kerberos server the clients talk to. 

As a test, I removed /etc/krb5.conf and rebooted the client. After reboot, I can still log in and "kinit user" . 
Removing /etc/krb5.keytab, however would stop user from logging in and sssd to start. 

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