diff --git a/bin/firewall-sosdg b/bin/firewall-sosdg
index b755676..7d5d4c9 100755
--- a/bin/firewall-sosdg
+++ b/bin/firewall-sosdg
@@ -110,6 +110,11 @@ if [[ "$EXTIF" == "auto" ]]; then
 	display_c YELLOW "Found default interface at: ${BLUE}${EXTIF}${DEFAULT_COLOR}"
 fi
 
+if [[ "$EXTIP" == "auto" ]]; then
+	EXTIP=$EXTIP_FIND
+	display_c YELLOW "Found default interface IP at: ${BLUE}${EXTIP}${DEFAULT_COLOR}"
+fi
+
 iptables_rules_flush ipv4
 
 if [ -s "$BASEDIR/include/ipv4_custom_flush" ]; then