The ordering of the records is important. If the order of the records were reversed, so that the wildcard rule was first, the rules that are specific to dbadmin would never be used. The wildcard or local rule would always match, and HP Vertica would use the password authentication, no matter where dbadmin connected from.
We see that you're a Vertica customer. If you need further assistance with the setup, we suggest you open a case with Technical Support and we'll be happy to assist you.