nsupdates failing from remote machine -- 9.2.5

[Simon Matthews]

I have a wierd problem with updates failing if I attempt to make an 
"update add" remotely. The problem only happens if the exact name I am 
adding does not already exist as an A record

My zone has a wildcard which points to a CNAME. If I create an explicit 
record that points to a CNAME for the name I am trying to add, it also 
fails.

It only works if the record already exists as an A record, or if I am 
running the update from the local machine.

Both the local and remote machines are running ISC BIND 9.2.5 on Gentoo 
Linux. The setup was working before a recent update to 9.2.5 (from 9.2.2)

The error message I get is:
tsig.c:293: REQUIRE(targetp != ((void *)0) && *targetp == ((void *)0)) 
failed.
Aborted

For privacy reasons, I need to change the IP addresses and domain names in 
the example below.

I also see problems just checking a rrset: