working nslookup for IPV6 and V4

getssl

@@ -141,6 +141,7 @@ _FORCE_RENEW=0
 _QUIET=0
 _UPGRADE=0
 _UPGRADE_CHECK=1
+IPV6=false
 
 # store copy of original command in case of upgrading script and re-running
 ORIGCMD="$0 $*"
@@ -1016,8 +1017,14 @@ for d in $alldomains; do
   # check nslookup for domains (ignore if using DNS check, as site may not be published yet)
   if [[ $VALIDATE_VIA_DNS != "true" ]]; then
     debug "checking nslookup for ${d}"
-    if [ "$(nslookup "${d}"| grep -c ^Name)" -lt 1 ]; then
-      error_exit "DNS lookup failed for $d"
+    if [[ "$IPV6" == "true" ]]; then
+      if [ "$(nslookup -query=AAAA "${d}"|grep -c ^""${d}".*has AAAA address")" -lt 1 ]; then
+        error_exit "DNS lookup IPV6 failed for $d"
+      fi
+    else
+      if [ "$(nslookup "${d}"| grep -c ^Name)" -lt 1 ]; then
+        error_exit "DNS lookup failed for $d"
+      fi
     fi
   fi
 done