+ 649. [bug] It was possible to join to an already running fctx
+ after it had "cloned" its events, but before it sent
+ them. In this case, the event of the newly joined
+ fetch would not contain the answer, and would
+ trigger the INSIST() in fctx_sendevents(). In
+ BIND 9.0, this bug did not trigger an INSIST(), but
+ caused the fetch to fail with a SERVFAIL result.
+ [RT #588, #597, #605, #607]
+
646. [bug] The UnixWare ISC_PLATFORM_FIXIN6INADDR fix in isc/net.h
didn't _cleanly_ fix the problem it was trying to fix.