From 7617ac208596665061453dfa04b75e4cc8a76ac9 Mon Sep 17 00:00:00 2001
From: Jens Harbott <j.harbott@x-ion.de>
Date: Tue, 19 Sep 2017 17:43:48 +0000
Subject: [PATCH] Make is_ipv4_address a bit more robust

Still not ideal, but at least should avoid matching IPv6 addresses.

Change-Id: Ibb64263fdb0308f56c18518289501dd4642dcbad
---
 functions-common | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/functions-common b/functions-common
index 713d92e717..ffdacef32e 100644
--- a/functions-common
+++ b/functions-common
@@ -2014,7 +2014,7 @@ function cidr2netmask {
 # Check if this is a valid ipv4 address string
 function is_ipv4_address {
     local address=$1
-    local regex='([0-9]{1,3}.){3}[0-9]{1,3}'
+    local regex='([0-9]{1,3}\.){3}[0-9]{1,3}'
     # TODO(clarkb) make this more robust
     if [[ "$address" =~ $regex ]] ; then
         return 0