samba - Dec 2012 - "samba_dnsupdate --verbose --all-names" with internal DNS?

Using the internal / default DNS server should the command  
"samba_dnsupdate --verbose --all-names" work?

Looking at the wiki this appears to be part of step#9, but I not sure  
the test shouldn't succeed.

$ samba_dnsupdate --verbose --all-names

...

; TSIG error with server: tsig verify failure
Failed nsupdate: 2
Calling nsupdate for SRV  
_gc._tcp.default-first-site-name._sites.micore.us barbel.micore.us 3268
Outgoing update query:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id:      0
;; flags:; ZONE: 0, PREREQ: 0, UPDATE: 0, ADDITIONAL: 0
;; UPDATE SECTION:
_gc._tcp.default-first-site-name._sites.micore.us. 900 IN SRV 0 100  
3268 barbel.micore.us.

; TSIG error with server: tsig verify failure
Failed nsupdate: 2
Failed update of 21 entries