diff --git a/unbound/pi-hole.conf b/unbound/pi-hole.conf
index 055bf3dd..692787ed 100644
--- a/unbound/pi-hole.conf
+++ b/unbound/pi-hole.conf
@@ -8,11 +8,12 @@ server:
     msg-cache-size: 128m
     rrset-cache-size: 256m
     serve-expired: yes
-
+    
     # If no logfile is specified, syslog is used
     # logfile: "/var/log/unbound/unbound.log"
     verbosity: 0
 
+    interface: 127.0.0.1
     port: 5335
     do-ip4: yes
     do-udp: yes
@@ -21,6 +22,10 @@ server:
     # May be set to yes if you have IPv6 connectivity
     do-ip6: no
 
+    # You want to leave this to no unless you have *native* IPv6. With 6to4 and
+    # Terredo tunnels your web browser should favor IPv4 for the same reasons
+    prefer-ip6: no
+
     # Use this only when you downloaded the list of primary root servers!
     root-hints: "/var/lib/unbound/root.hints"