host command bug?

[Mark Foster]

I may have discovered a bug in the host command.
I have a zone with 7 nameservers (NS records).
Using host -t ns zonename shows all 7 records.
[mf1 at host1 ~]$ host -t ns 45.10.in-addr.arpa | wc -l
7

Using host -C zonename consistently shows only up to 6 name servers.
[mf1 at host1 ~]$ host -C 45.10.in-addr.arpa | grep Nameserver | wc -l
6

I have verified this with multiple zones and NS combinations.
Why the limitation?

Versions: bind 9.2.4 on Debian sarge and CentOS-3