diff --git a/config.yaml b/config.yaml
index 84ad40f1..148466a5 100644
--- a/config.yaml
+++ b/config.yaml
@@ -127,3 +127,15 @@ options:
     default: False
   dns_hosts:
     type: string
+  ha-bindiface:
+    type: string
+    default: eth0
+    description: |
+      Default network interface on which HA cluster will bind to communicate
+      with the other members of the HA Cluster.
+  ha-mcastport:
+    type: int
+    default: 5409
+    description: |
+      Default multicast port number that will be used to communicate between
+      HA Cluster nodes.
diff --git a/hooks/quantum_utils.py b/hooks/quantum_utils.py
index d48da4e7..78dadf5b 100644
--- a/hooks/quantum_utils.py
+++ b/hooks/quantum_utils.py
@@ -590,10 +590,13 @@ def configure_ovs():
 def get_dns_host():
     dns_hosts = ['8.8.8.8 ']
     try:
-        nameservers = subprocess.check_output(['grep', 'nameserver',
-                                               '/etc/resolv.conf'])
-        for ns in nameservers:
-            dns_hosts.append(ns.split(' ')[1].split('\n')[0].strip() + ' ')
+        output = subprocess.check_output(['grep', 'nameserver',
+                                          '/etc/resolv.conf'])
+        nameservers = output.split('\n')
+        hosts = [(ns.split(' ')[1].split('\n')[0].strip() + ' ')
+                 for ns in nameservers if ns.startswith('nameserver')
+                 and ns.split(' ')[1]]
+        dns_hosts.append(hosts)
     except Exception:
         log('Failed to get nameserver from resolv.conf !', level=ERROR)