diff --git a/netinterface.py b/netinterface.py
index abdfc9c4..086f5df8 100644
--- a/netinterface.py
+++ b/netinterface.py
@@ -130,6 +130,10 @@ def isStatic6(self):
         """ Returns true if an IPv6 static interface configuration is represented. """
         return self.modev6 == self.Static
 
+    def isDynamic(self):
+        """ Returns true if a dynamic interface configuration is represented. """
+        return self.mode == self.DHCP or self.modev6 == self.DHCP or self.modev6 == self.Autoconf
+
     def isVlan(self):
         return self.vlan is not None
 
diff --git a/netutil.py b/netutil.py
index 00af6861..1719e336 100644
--- a/netutil.py
+++ b/netutil.py
@@ -92,7 +92,7 @@ def writeResolverFile(configuration, filename):
 
     for iface in configuration:
         settings = configuration[iface]
-        if settings.isStatic4() and settings.dns:
+        if (not settings.isDynamic()) and settings.dns:
             if settings.dns:
                 for server in settings.dns:
                     outfile.write("nameserver %s\n" % server)
diff --git a/tui/installer/screens.py b/tui/installer/screens.py
index feec2f6e..f0ef4490 100644
--- a/tui/installer/screens.py
+++ b/tui/installer/screens.py
@@ -895,7 +895,7 @@ def ns_callback((enabled, )):
         for entry in [ns1_entry, ns2_entry, ns3_entry]:
             entry.setFlags(FLAG_DISABLED, enabled)
 
-    hide_rb = answers['net-admin-configuration'].isStatic4()
+    hide_rb = not answers['net-admin-configuration'].isDynamic()
 
     # HOSTNAME:
     hn_title = Textbox(len("Hostname Configuration"), 1, "Hostname Configuration")
@@ -1025,7 +1025,7 @@ def nsvalue(answers, id):
                 answers['manual-nameservers'][1].append(ns2_entry.value())
                 if ns3_entry.value() != '':
                     answers['manual-nameservers'][1].append(ns3_entry.value())
-            if 'net-admin-configuration' in answers and answers['net-admin-configuration'].isStatic4():
+            if 'net-admin-configuration' in answers and not answers['net-admin-configuration'].isDynamic():
                 answers['net-admin-configuration'].dns = answers['manual-nameservers'][1]
         else:
             answers['manual-nameservers'] = (False, None)
@@ -1126,7 +1126,7 @@ def dhcp_change():
         for x in [ ntp1_field, ntp2_field, ntp3_field ]:
             x.setFlags(FLAG_DISABLED, not dhcp_cb.value())
 
-    hide_cb = answers['net-admin-configuration'].isStatic4()
+    hide_cb = not answers['net-admin-configuration'].isDynamic()
 
     gf = GridFormHelp(tui.screen, 'NTP Configuration', 'ntpconf', 1, 4)
     text = TextboxReflowed(60, "Please specify details of the NTP servers you wish to use (e.g. pool.ntp.org)?")