AMD started with the following command:

amd -p -x fatal,error,user -r -l syslog -a /tmp_mnt /vol amd.vol /home amd.home /net amd.net

amd.net map defined to NIS as follows:

/defaults       type:=host;fs:=${autodir}/${rhost};rhost:=${key}

cwsys           opts:=rw,intr,grpid

cwsys.cwent.com         opts:=rw,intr,grpid,timo=10,retrans=5

cwtest          opts:=rw,intr,grpid,timo=10,retrans=5

cwtest.cwent.com        opts:=rw,intr,grpid,timo=10,retrans=5

*               opts:=rw,intr,nosuid,nodevs,grpid,soft,timo=10,retrans=5

/var/log/messages contains:
Jun 29 14:17:40 cwsys amd[857]: /tmp_mnt/cwsys/export: mount: Bad address
Jun 29 14:17:40 cwsys amd[857]: /tmp_mnt/cwsys/opt: mount: Bad address
Jun 29 14:17:40 cwsys amd[857]: /tmp_mnt/cwsys/usr: mount: Bad address
Jun 29 14:18:05 cwsys amd[860]: /tmp_mnt/cwtest: mount: Bad address

Fix: 

Unable to provide a fix.
How-To-Repeat: Use a Network Host Filesystem (type:=host) as described in the full
description.