Sorry, It's my fault.

-bash-3.00# nslookup data-central
Server: 192.168.11.1
Address: 192.168.11.1#53

Non-authoritative answer:
Name: test10.homelinux.org
Address: 210.*.*.*

I forgot that I bind the test01 with global IP, then cause the RPC failure.


Thanks for your guide.
Just modify /etc/nsswitch.conf to first contact nis server then dns, I got the cd /net/data-central workable.

Thanks for reporting, that was puzzling !