fail silently should iptables legacy interface fail to create

QxBytes · QxBytes · commit e68f37bf41fd · 2025-08-27T15:14:36.000-07:00
diff --git a/cns/restserver/internalapi_linux.go b/cns/restserver/internalapi_linux.go
@@ -46,7 +46,8 @@ func (service *HTTPRestService) programSNATRules(req *cns.CreateNetworkContainer
 
 	iptl, err := service.iptables.GetIPTablesLegacy()
 	if err != nil {
-		return types.UnexpectedError, fmt.Sprintf("[Azure CNS] Error. Failed to create iptables legacy interface : %v", err)
+		logger.Printf("[Azure CNS] Could not create iptables legacy interface, not programming snat : %v", err)
+		return types.Success, ""
 	}
 	err = iptl.Delete(iptables.Nat, iptables.Postrouting, "-j", SWIFTPOSTROUTING)
 	// ignore if command fails

Original file line number	Diff line number	Diff line change
`@@ -46,7 +46,8 @@ func (service HTTPRestService) programSNATRules(req cns.CreateNetworkContainer`
`46`	`46`
`47`	`47`	`iptl, err := service.iptables.GetIPTablesLegacy()`
`48`	`48`	`if err != nil {`
`49`		`- return types.UnexpectedError, fmt.Sprintf("[Azure CNS] Error. Failed to create iptables legacy interface : %v", err)`
	`49`	`+ logger.Printf("[Azure CNS] Could not create iptables legacy interface, not programming snat : %v", err)`
	`50`	`+ return types.Success, ""`
`50`	`51`	`}`
`51`	`52`	`err = iptl.Delete(iptables.Nat, iptables.Postrouting, "-j", SWIFTPOSTROUTING)`
`52`	`53`	`// ignore if command fails`