diff --git a/openvpn-install.sh b/openvpn-install.sh
index 68b6c94..0f966d9 100755
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -207,6 +207,10 @@ function installQuestions () {
 
 	# Detect public IPv4 address and pre-fill for the user
 	IP=$(ip -4 addr | sed -ne 's|^.* inet \([^/]*\)/.* scope global.*$|\1|p' | head -1)
+	if [[ -z "$IP" ]]; then
+		# Detect public IPv6 address
+		IP=$(ip -6 addr | sed -ne 's|^.* inet6 \([^/]*\)/.* scope global.*$|\1|p' | head -1)
+	fi
 	APPROVE_IP=${APPROVE_IP:-n}
 	if [[ $APPROVE_IP =~ n ]]; then
 		read -rp "IP address: " -e -i "$IP" IP