From f1fe3d0faf16b25147a5eb37dca7a04901d7e888 Mon Sep 17 00:00:00 2001
From: Christophe Delahaye <christophe.delahaye@orange.com>
Date: Thu, 15 Oct 2020 15:37:34 +0200
Subject: [PATCH] internet: Loopback IPv4 address should have HOST scope

---
 src/internet/model/ipv4-interface-address.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/internet/model/ipv4-interface-address.cc b/src/internet/model/ipv4-interface-address.cc
index e2a444446..feb6b6bfc 100644
--- a/src/internet/model/ipv4-interface-address.cc
+++ b/src/internet/model/ipv4-interface-address.cc
@@ -39,6 +39,10 @@ Ipv4InterfaceAddress::Ipv4InterfaceAddress (Ipv4Address local, Ipv4Mask mask)
 {
   NS_LOG_FUNCTION (this << local << mask);
   m_local = local;
+  if (m_local == Ipv4Address::GetLoopback ())
+    {
+      m_scope = HOST;
+    }
   m_mask = mask;
   m_broadcast = Ipv4Address (local.Get () | (~mask.Get ()));
 }