postgresql listen on pseudo-address

roles/postgresql_server/templates/postgresql/postgresql.conf.j2

@@ -57,6 +57,8 @@ external_pid_file = '/var/run/postgresql/{{ postgresql.version }}-main.pid'
 
 # - Connection Settings -
 
+listen_addresses = 0.0.0.0, [::]
+# listen_addresses = * # listen to all
 #listen_addresses = 'localhost'		# what IP address(es) to listen on;
 					# comma-separated list of addresses;
 					# defaults to 'localhost'; use '*' for all