How can I redirect some IP addresses?

[Jiff]

Hi forulisters,

I've got a bunch of IP addresses and IP ranges I'd like 
to redirect to, let's say the amnesty international site 
(they're mainly from gov).

I read http://wiki.nginx.org/HttpAccessModule but as I've
got many of them I'm wondering if nginx can read a text 
file (or something else) instead of put all these addresses 
in a block?

I'd also like if I can have a round-robin of redirections
(once for amnesty, next to copwatch, etc)?

Jiff

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,228151,228151#msg-228151