When doing vastool commands, getting "ERROR: Could not communicate with vasd." (4295413)

When doing vastool commands, getting "ERROR: Could not communicate with vasd."    The problem is intermittent. It happens on multiple machines.

Also seeing the following while issue is occurring:

 1 - Run as root: 

/opt/quest/bin/vastool status or  /opt/quest/libexec/vas/scripts/vas_status.sh

Produces the following:

FAILURE: 301 VAS cannot find a Domain Controller (DC) that it can communicate with.
Result: <Test(s) failed> (1 seconds)(v0.5.4)

2 - ps -ef|grep vas
root     11104     1  0 08:01 ?        00:00:00 /opt/quest/sbin/vasd -p /var/opt/quest/vas/vasd/.vasd.pid
root     11131     1  0 08:02 ?        00:00:00 /opt/quest/sbin/vasgpd -p /var/opt/quest/vgp/vasgpd/.vasgpd.pid
daemon   11142 11104  0 08:02 ?        00:00:01 /opt/quest/sbin/vasd -p /var/opt/quest/vas/vasd/.vasd.pid
daemon   11161 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11162 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11163 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11164 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11165 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11166 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11167 11142  0 08:07 ?        00:00:00 [vasd] <defunct>
daemon   11168 11142  0 08:07 ?        00:00:00 [vasd] <defunct>

Machines were in a firewalled enviroment where they can reach 2 dc's out of 250, from 1 domain out of 8.

1 - The below script will let you identify which domains are reachable and which are not:

D=`/opt/quest/bin/vastool -u host/ info domains`; echo Domains: $D; echo Reachable domains:; for d in $D; do for s in `/opt/quest/bin/vastool info servers -d $d -s \* | grep -v ^Servers`; do /opt/quest/bin/vastool info cldap $s 2>/dev/null | grep "Server Domain" | awk '{print $3}' & done 2>/dev/null ; done | sort | uniq; wait 2>/dev/null