diff --git a/4-private.sh b/4-private.sh
new file mode 100755
index 0000000..99f5014
--- /dev/null
+++ b/4-private.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+ip addr show | grep 'global' | grep -oE 'inet [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -n 1
+