-RANDFILE = %(basedir)s/.random
+RANDFILE = ${ENV::CAROOT}/.random
 
 [ ca ]
 default_ca              = CA_default
+unique_subject          = no
 
 [ CA_default ]
-dir                     = %(basedir)s
+dir                     = ${ENV::CAROOT}
 certs                   = $dir/public/certs
 crl_dir                 = $dir/public/crl
 crl                     = $dir/public/crl.pem