From 49ac0bc0e3ee77e3104596411ed9c556845b7945 Mon Sep 17 00:00:00 2001
From: Trekkie Coder <trekkie@netlox.io>
Date: Thu, 1 Feb 2024 23:28:54 +0900
Subject: [PATCH] Implementation of minimal fallback mode needed especially for
 masquerading

---
 loxilb-ebpf        |  2 +-
 loxinet/route.go   | 14 ++++++++++----
 options/options.go |  1 +
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/loxilb-ebpf b/loxilb-ebpf
index 9ff2c017..4f79bbe4 160000
--- a/loxilb-ebpf
+++ b/loxilb-ebpf
@@ -1 +1 @@
-Subproject commit 9ff2c0178180b7877cd089ae81d7491a06598984
+Subproject commit 4f79bbe43f973f7683ec7006bfe6c2881b3618ac
diff --git a/loxinet/route.go b/loxinet/route.go
index f9c69f23..0f7b66eb 100644
--- a/loxinet/route.go
+++ b/loxinet/route.go
@@ -19,11 +19,10 @@ package loxinet
 import (
 	"errors"
 	"fmt"
-	"net"
-
-	tk "github.com/loxilb-io/loxilib"
-
 	cmn "github.com/loxilb-io/loxilb/common"
+	opts "github.com/loxilb-io/loxilb/options"
+	tk "github.com/loxilb-io/loxilib"
+	"net"
 )
 
 // error codes
@@ -471,6 +470,13 @@ func (rt *Rt) DP(work DpWorkT) int {
 		return -1
 	}
 
+	if opts.Opts.FallBack {
+		if rtNet.IP.IsUnspecified() {
+			fmt.Printf("FALL BACK MODE\n\n\n\n")
+			return 0
+		}
+	}
+
 	if work == DpStatsGet {
 		nStat := new(StatDpWorkQ)
 		nStat.Work = work
diff --git a/options/options.go b/options/options.go
index d20269c5..83594955 100644
--- a/options/options.go
+++ b/options/options.go
@@ -30,4 +30,5 @@ var Opts struct {
 	Rpc               string         `long:"rpc" description:"RPC mode for syncing - netrpc or grpc" default:"netrpc"`
 	K8sApi            string         `long:"k8s-api" description:"Enable k8s watcher(experimental)" default:"none"`
 	IPVSCompat        bool           `long:"ipvs-compat" description:"Enable ipvs-compat(experimental)"`
+	FallBack          bool           `long:"fallback" description:"Fallback to system default networking(experimental)"`
 }