I encountered an error when connecting drawterm with cpu/auth server.

on the plan9 cpu/auth server, I type auth/debug, it outputs

I also type cpu -h super on the auth/cpu server, the error is the same with drawterm:

I set up the auth/cpu server according to plan9 wiki,
http://plan9.bell-labs.com/wiki/plan9/configuring_a_standalone_cpu_server/

Followings are my /lib/ndb/local config.
Any suggestions or comments are welcome!

#
#  files comprising the database, use as many as you like, see ndb(6)
#
database=
    file=/lib/ndb/local
    file=/lib/ndb/common
#    file=/lib/ndb/auth

auth=sources.cs.bell-labs.com authdom=outside.plan9.bell-labs.com

ipnet=cuiy ip=192.168.122.0 ipmask=255.255.255.0
    auth=super
    cpu=super
    fs=super
    ntp=128.59.22.30
    dns=192.168.122.1
    ipgw=192.168.122.1
    authdom=cuiy.net
    dnsdom=cuiy.net

ip=192.168.122.71 sys=super dom=cuiy.net

#
#  because the public demands the name localsource
#
ip=127.0.0.1 sys=localhost dom=localhost