From 71f5723be66b390299324dfa8a2451d65f6df7be Mon Sep 17 00:00:00 2001
From: Alejandro Huertas Herrero <ahuertas@opennebula.systems>
Date: Wed, 29 Apr 2020 19:28:31 +0200
Subject: [PATCH] B #4220: avoid VROUTER_KEEPALIVED_ID = 0 (#4620)

---
 src/vrouter/VirtualRouter.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/vrouter/VirtualRouter.cc b/src/vrouter/VirtualRouter.cc
index 222624df06..43859c8e04 100644
--- a/src/vrouter/VirtualRouter.cc
+++ b/src/vrouter/VirtualRouter.cc
@@ -490,7 +490,8 @@ Template * VirtualRouter::get_vm_template() const
 
     if (!obj_template->get("KEEPALIVED_ID", keepalived_id))
     {
-        keepalived_id = (oid & 0xFF);
+        // Keep Alive should be arbitrary unique number from 1 to 255
+        keepalived_id = (oid % 255) + 1;
     }
 
     tmpl->replace("VROUTER_KEEPALIVED_ID", keepalived_id);