Steps to reproduce:

(1.a) start Hawkular without -b 0.0.0.0

(2.a) Visit the client using http://127.0.0.1

(3.a) Go to Application Servers > the local server > Datasources > Add Jdbc Driver

(4.a) Insert some valid data, e.g. using the com.h2database driver from your local maven repo

(5.a) Expected and actual: The driver is created

Now, log out, and change the client URL:

(2.b) Visit the client using http://localhost
(3,4) as above, but insert slightly different data so that the driver can be created
(5.b) Expected: The driver is created
Actual: Authentication problem in the log

Now stop the server, eventually clean the data and
(1.c) start with -b 0.0.0.0
No matter what IP/hostname you use in step (2), there is an authentication problem in all cases