Revert revert re-install guard
Revert revert re-install guard

astockwell/ruby-net-ldap,cloudvolumes/ruby-net-ldap,javanthropus/ruby-net-ldap,bkeepers/ruby-net-ldap,bkeepers/ruby-net-ldap,javanthropus/ruby-net-ldap,astockwell/ruby-net-ldap,cloudvolumes/ruby-net-ldap