AJP connector address vs. IPv4/6

[Jess Holle]

I'd like to set the "address" attribute on the AJP connector when 
deploying Tomcat to only allow loopback connections.

But I want to do so in a general way that works for:
 * IPv4
 * IPv4 + IPv6 mixed/dual stack
 * IPv6 (pure)

Is there any such option?  The documentation speaks of setting 
127.0.0.1, yet I see indications that this won't fly in a pure IPv6 
world.  If a single value won't work, is there any good way to detect 
which stacks are available via Java APIs during deployment?

--
Jess Holle