We are running ypserv (using shadow passwords) and are
trying to run a slave server.  We have followed essentially
the instruction of the NIS HOWTO (section 8 -- written by
Thorsten Kukuk and dated 9 March 99).  When we go to the
command # /usr/lib/yp/ypinit -s OURMASTEERHOST
we get the following comment
 "Can't enumerate maps from OURMASTERHOST Please check that
it is running."  -- where OURMASTERHOST is the name of IP
name of the master server.

On the master we have the following  "yp" processes running
# ps aux | grep yp
root  519  0.0 0.0 1340  340 ?     S Aug25 0:00
rpc.yppasswdd
root 7484  0.0 0.7 4600 3876 pts/9 S 11:14 0:04 ypserv
root 7495  0.0 0.1 1336  560 pts/9 S 11:14 0:00 rpc.ypxfrd

On the Slave Server these yp processes are running
# ps -aux | grep yp
root  271  0.0 0.1 1288  564 ?   S 11:23 0:00 ypserv
root  283  0.0 0.0 1232  504 ?   S 11:23 0:00 ypbind(master)
root  290  0.0 0.1 1252  592 ?   S 11:23 0:00 ypbind (slave)

What is the problem?