question regarding kadmin

[Vipin Rathor]

hi list,
As I was playing arround  with krb5.conf and kadmind daemon, I face this.
If the "default_realm = xx" entry is removed from krb5.conf file. Then
the kadmin deamon started well with "kadmind -r <realm>".
But when I was starting kadmin interface, it failed saying:

# kadmin -p admin/admin -r <realm>
Authenticating as principal admin/admin with password.
kadmin: Configuration file does not specify default realm while
initializing kadmin interface

Is this an expected behavior?
I'm using krb5-1.6.3. It's a 64-bit linux machine with RHEL4.

Thanks in advance !

-- 
-Rathor