JRS - Proxying v2

[Arran Cudbard-Bell]

>> Hmm didn't come through in the install :(
>>     
>   I think the problem is you're still using hostname in home_servers..
> Don't.  It doesn't work, and it won't work until I find some time to fix it.
>
>   
Aha, yes it works with ipaddr declaration.

Hmm looks good, failing over as expected, pinging all dead servers to 
check if they're alive.... cool.
>>   Sure.  The main problem is that the configuration variables get
>> expanded before the modules are loaded.  Doing DNS lookups via another
>> hook is therefore hard.  Useful as heck, but hard.
>>     
Ah, ok... so it might be better as an extension to the expressions 
module possibly.... As that must already have hooks, to write the values
to the configuration variables during expansion.

On a completely unrelated subject, whats the standard checking behaviour 
when you have multiple instances of the same attribute,
will each of the instances be checked in turn ?
---
Arran