File dont_overwrite_ifcfg.patch of Package google-guest-agent.28055

diff -Nru guest-agent-20211019.00.orig/google_guest_agent/addresses.go guest-agent-20211019.00/google_guest_agent/addresses.go
--- guest-agent-20211019.00.orig/google_guest_agent/addresses.go	2021-10-20 00:09:13.000000000 +0200
+++ guest-agent-20211019.00/google_guest_agent/addresses.go	2021-10-22 11:32:04.447560133 +0200
@@ -558,7 +558,12 @@
 		logger.Debugf("write enabling ifcfg-%s config", iface)
 
 		var ifcfg *os.File
-		ifcfg, err = os.Create("/etc/sysconfig/network/ifcfg-" + iface)
+		filename := "/etc/sysconfig/network/ifcfg-" + iface
+		_, err = os.Stat(filename)
+		if ! os.IsNotExist(err) {
+			return nil
+		}
+		ifcfg, err = os.Create(filename)
 		if err != nil {
 			return err
 		}