NFS client setup -;NFS Server Hostname discovery?

I have 3 PCs on my home LAN, all running 13.2_64 with nfs server running and exports defined.
In fact, a couple automount shares are already working properly.

My question arises from trying to set up additional client shares on a new PC.
On that machine, I see the following:

# service nfsserver status
nfsserver.service - LSB: Start the kernel based NFS daemon
   Loaded: loaded (/etc/init.d/nfsserver)
   Active: active (running) since Thu 2015-03-05 10:32:18 EST; 3h 18min ago
  Process: 954 ExecStart=/etc/init.d/nfsserver start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/nfsserver.service
           |-1025 /usr/sbin/rpc.idmapd -p /var/lib/nfs/rpc_pipefs
           |-1041 /usr/sbin/rpc.mountd
           `-1046 /usr/sbin/rpc.statd --no-notify

Mar 05 10:32:17 PVE-GatewayLaptop.capenet rpc.mountd[1041]: Version 1.3.0 starting
Mar 05 10:32:17 PVE-GatewayLaptop.capenet rpc.statd[1046]: Version 1.3.0 starting
Mar 05 10:32:17 PVE-GatewayLaptop.capenet rpc.statd[1046]: Flags: TI-RPC
Mar 05 10:32:18 PVE-GatewayLaptop.capenet sm-notify[1082]: Version 1.3.0 starting
Mar 05 10:32:18 PVE-GatewayLaptop.capenet nfsserver[954]: Starting kernel based NFS server: idmapd mountd statd nfsd sm-notify..done
.....
# netstat -tlp
Active Internet connections (only servers)                                                                                                              
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name                                                        
tcp        0      0 *:netbios-ssn           *:*                     LISTEN      1049/smbd                                                               
tcp        0      0 *:sunrpc                *:*                     LISTEN      1/systemd                                                               
tcp        0      0 *:mountd                *:*                     LISTEN      3637/rpc.mountd     
tcp        0      0 *:ssh                   *:*                     LISTEN      979/sshd            
tcp        0      0 localhost:ipp           *:*                     LISTEN      956/cupsd           
tcp        0      0 *:37657                 *:*                     LISTEN      3640/rpc.statd      
tcp        0      0 localhost:smtp          *:*                     LISTEN      1112/master         
tcp        0      0 *:microsoft-ds          *:*                     LISTEN      1049/smbd           
tcp        0      0 *:nfs                   *:*                     LISTEN      -                   
tcp        0      0 *:49252                 *:*                     LISTEN      -                   
tcp        0      0 *:netbios-ssn           *:*                     LISTEN      1049/smbd           
tcp        0      0 *:sunrpc                *:*                     LISTEN      1/systemd           
tcp        0      0 *:mountd                *:*                     LISTEN      3637/rpc.mountd     
tcp        0      0 *:53524                 *:*                     LISTEN      -                   
tcp        0      0 *:ssh                   *:*                     LISTEN      979/sshd            
tcp        0      0 *:44378                 *:*                     LISTEN      3640/rpc.statd      
tcp        0      0 *:microsoft-ds          *:*                     LISTEN      1049/smbd           
tcp        0      0 *:nfs                   *:*                     LISTEN      -      

From the client end, I open YAST-Network Services-NFS Client, see a display of my established mounts, select Add at the bottom and get the pop-up menu for adding a new client connection. If I enter the IP address of the new server, I can then see the available exports on that server when I click the Select box.

But if I restart the whole process to set up a new client connection, and click the Choose button, after a bit of time I get a pop-up : ERROR No nfs server has been found on your network. I know that is not the case, I am already connected to two established servers, the new server (info above) and the system I am running YAST on are all up servers running and I can browse connections via dolphin.

So nfs seems to be running fine.

What does not work is the NFS Server Discovery process that should return a list of running servers to the NFS client setup in YAST.

Any hints for what to look for?
All server machines are reachable via ssh.
All firewalls are turned off.

Thanks in advance