From 27a5aecf56fbfa9a8d92d86d7e68c2781c0b4523 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Wed, 19 Aug 2015 14:00:28 +0200
Subject: [PATCH] network/ifup.sh:do_static(): error out, if IP is already
 assigned

(cherry picked from commit 32770ca79a1f6828ca9fdf4b6841e6a6d4e4754a)
---
 modules.d/40network/ifup.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/modules.d/40network/ifup.sh b/modules.d/40network/ifup.sh
index 69a4567..381ff43 100755
--- a/modules.d/40network/ifup.sh
+++ b/modules.d/40network/ifup.sh
@@ -155,6 +155,15 @@ do_static() {
         return 1
     fi
 
+    ip route get "$ip" | {
+        read a rest
+        if [ "$a" = "local" ]; then
+            warn "Not assigning $ip to interface $netif, cause it is already assigned!"
+            return 1
+        fi
+        return 0
+    } || return 1
+
     [ -n "$macaddr" ] && ip link set address $macaddr dev $netif
     [ -n "$mtu" ] && ip link set mtu $mtu dev $netif
     if strglobin $ip '*:*:*'; then