Referencing by cname from one authoritative zone to another authoritative zone

[大浦 義]

Dear All

Referencing by cname from one authoritative zone to another authoritative zone may not work properly depending on the version.
Is this due to a specification change? Is there a way to handle this? 
I am running nslookup from a client that is not included in acl respectively.
I would like to make the NG part become OK.

--
One Server Has Two Zone.
aaa.ne.jp & bbb.co.jp

・aaa.ne.jp
time1			CNAME	ns2.bbb.co.jp.
time2			CNAME	ns1.bbb.co.jp.

・bbb.co.jp
ns1			A	1.2.3.4
ns2			A	1.2.3.5
time		CNAME	ns2

・Bind9.9.4→OK
>nslookup time2.aaa.ne.jp
名前:    ns1.bbb.co.jp
Address:  1.2.3.4
Aliases:  time2.aaa.ne.jp

・Bind9.18.28→NG
>nslookup time2.aaa.ne.jp
名前:    ns1.bbb.co.jp

・/etc/named.conf
/etc/named.conf
acl "local" {
        xxx.xxx.xxx.xxx; 127.0.0.1; 
};
・
・
・
allow-recursion { local; };

--
Client yyy.yyy.yyy.yyy(not include acl)