Yes, that's true.

It looks like one needs to upgrade to MySQL v5.6.1+ to have this feature.

As this page states: http://dev.mysql.com/doc/refman/5.6/en/mysql-command-options.html#option_mysql_bind-address

--bind-address=ip_address

On a computer having multiple network interfaces, this option can be used to select which interface is employed when connecting to the MySQL server.

This option is supported beginning with MySQL 5.6.1.

Thanks for the info!