diff --git a/src/etc/rc.newwanip b/src/etc/rc.newwanip
index 4fa3056cf..d245927e3 100755
--- a/src/etc/rc.newwanip
+++ b/src/etc/rc.newwanip
@@ -146,8 +146,9 @@ ifgroup_setup();
 
 $cacheip_file = "/tmp/{$interface_real}_oldip";
 $cacheip = trim(@file_get_contents($cacheip_file));
+$intf_ipaddr = $config['interfaces'][$interface]['ipaddr'];
 
-if ($ip != $cacheip || !is_ipaddr($config['interfaces'][$interface]['ipaddr'])) {
+if ($ip != $cacheip || (!is_ipaddr($intf_ipaddr) && $intf_ipaddr != 'dhcp')) {
     system_routing_configure(false, $interface);
     plugins_configure('monitor');
     filter_configure_sync();
diff --git a/src/etc/rc.newwanipv6 b/src/etc/rc.newwanipv6
index c9fbd49a7..b61a781ea 100755
--- a/src/etc/rc.newwanipv6
+++ b/src/etc/rc.newwanipv6
@@ -84,8 +84,9 @@ system_hosts_generate();
 
 $cacheip_file = "/tmp/{$interface_real}_oldipv6";
 $cacheip = trim(@file_get_contents($cacheip_file));
+$intf_ipaddr = $config['interfaces'][$interface]['ipaddrv6'];
 
-if ($ip != $cacheip || !is_ipaddr($config['interfaces'][$interface]['ipaddrv6'])) {
+if ($ip != $cacheip || (!is_ipaddr($intf_ipaddr) && $intf_ipaddr != 'dhcp6')) {
     if ($ip == $cacheip) {
         if (in_array($config['interfaces'][$interface]['ipaddr'], array('l2tp', 'ppp', 'pppoe', 'pptp'))) {
             /* PPP reconnect loop avoidance */