>   | 	i would recommend you to look at BIND9 source, which randomizes
>   | 	DNS id field just like ours.
> Maybe you'd like to point out just where to look, I've taken a quick
> glance though its code, and can't find a reference to "arc4" anywhere
> (not even in the dnssec code).   ("rc4" exists, but as the suffix of the
> identifier "notifysrc4" which I'm pretty sure has nothing to do with
> the arc4random() function "just like ours").

	in bind-9.3.0s20021217, lib/dns/dispatch.c:dns_randomid().

itojun